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164253013 = 295663897
BaseRepresentation
bin10011100101001…
…00110101010101
3102110001220202221
421302210311111
5314022044023
624144302341
74033061521
oct1162446525
9373056687
10164253013
11847977a1
12470119b1
132804c542
1417b58d81
15e64785d
hex9ca4d55

164253013 has 4 divisors (see below), whose sum is σ = 169916940. Its totient is φ = 158589088.

The previous prime is 164253007. The next prime is 164253049. The reversal of 164253013 is 310352461.

164253013 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 60559524 + 103693489 = 7782^2 + 10183^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-164253013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164250013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2831920 + ... + 2831977.

It is an arithmetic number, because the mean of its divisors is an integer number (42479235).

Almost surely, 2164253013 is an apocalyptic number.

It is an amenable number.

164253013 is a deficient number, since it is larger than the sum of its proper divisors (5663927).

164253013 is an equidigital number, since it uses as much as digits as its factorization.

164253013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5663926.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 164253013 is about 12816.1231657627. The cubic root of 164253013 is about 547.6517102843.

The spelling of 164253013 in words is "one hundred sixty-four million, two hundred fifty-three thousand, thirteen".

Divisors: 1 29 5663897 164253013