164253405 has 16 divisors (see below), whose sum is σ = 278265024. Its totient is φ = 82448640.

The previous prime is 164253367. The next prime is 164253409. The reversal of 164253405 is 504352461.

It is not a de Polignac number, because 164253405 - 2¹⁰ = 164252381 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164253409) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 321811 + ... + 322320.

It is an arithmetic number, because the mean of its divisors is an integer number (17391564).

Almost surely, 2^164253405 is an apocalyptic number.

164253405 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

164253405 is a deficient number, since it is larger than the sum of its proper divisors (114011619).

164253405 is a wasteful number, since it uses less digits than its factorization.

164253405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 644156.

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 164253405 is about 12816.1384589899. The cubic root of 164253405 is about 547.6521459522.

The spelling of 164253405 in words is "one hundred sixty-four million, two hundred fifty-three thousand, four hundred five".