164891032 has 8 divisors (see below), whose sum is σ = 309170700. Its totient is φ = 82445512.

The previous prime is 164891029. The next prime is 164891033. The reversal of 164891032 is 230198461.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164891033) 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 as a sum of consecutive naturals, namely, 10305682 + ... + 10305697.

Almost surely, 2^164891032 is an apocalyptic number.

It is an amenable number.

164891032 is a deficient number, since it is larger than the sum of its proper divisors (144279668).

164891032 is a wasteful number, since it uses less digits than its factorization.

164891032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20611385 (or 20611381 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 164891032 is about 12840.9903044898. The cubic root of 164891032 is about 548.3598875629.

The spelling of 164891032 in words is "one hundred sixty-four million, eight hundred ninety-one thousand, thirty-two".