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164401473 = 354800491
BaseRepresentation
bin10011100110010…
…01000101000001
3102110100110102110
421303021011001
5314041321343
624151405533
74034250405
oct1163110501
9373313373
10164401473
1184889295
12470838a9
13280a1ca2
1417b97105
15e676833
hex9cc9141

164401473 has 4 divisors (see below), whose sum is σ = 219201968. Its totient is φ = 109600980.

The previous prime is 164401469. The next prime is 164401481. The reversal of 164401473 is 374104461.

164401473 is nontrivially palindromic in base 9.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 164401473 - 22 = 164401469 is a prime.

It is a super-3 number, since 3×1644014733 (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 164401473.

It is not an unprimeable number, because it can be changed into a prime (164401403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27400243 + ... + 27400248.

It is an arithmetic number, because the mean of its divisors is an integer number (54800492).

Almost surely, 2164401473 is an apocalyptic number.

It is an amenable number.

164401473 is a deficient number, since it is larger than the sum of its proper divisors (54800495).

164401473 is an equidigital number, since it uses as much as digits as its factorization.

164401473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54800494.

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 164401473 is about 12821.9137807115. The cubic root of 164401473 is about 547.8166588355.

The spelling of 164401473 in words is "one hundred sixty-four million, four hundred one thousand, four hundred seventy-three".

Divisors: 1 3 54800491 164401473