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164216379 = 3173219929
BaseRepresentation
bin10011100100110…
…11111000111011
3102110000001112010
421302123320323
5314014411004
624143421003
74032546645
oct1162337073
9373001463
10164216379
1184772218
1246bb4763
1328038972
1417b49895
15e63ba89
hex9c9be3b

164216379 has 8 divisors (see below), whose sum is σ = 231834960. Its totient is φ = 103037696.

The previous prime is 164216369. The next prime is 164216383. The reversal of 164216379 is 973612461.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 164216379 - 212 = 164212283 is a prime.

It is not an unprimeable number, because it can be changed into a prime (164216309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1609914 + ... + 1610015.

It is an arithmetic number, because the mean of its divisors is an integer number (28979370).

Almost surely, 2164216379 is an apocalyptic number.

164216379 is a deficient number, since it is larger than the sum of its proper divisors (67618581).

164216379 is a wasteful number, since it uses less digits than its factorization.

164216379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3219949.

The product of its digits is 54432, while the sum is 39.

The square root of 164216379 is about 12814.6938707095. The cubic root of 164216379 is about 547.6109922803.

The spelling of 164216379 in words is "one hundred sixty-four million, two hundred sixteen thousand, three hundred seventy-nine".

Divisors: 1 3 17 51 3219929 9659787 54738793 164216379