164191536 has 50 divisors (see below), whose sum is σ = 475221692. Its totient is φ = 54730080.

The previous prime is 164191529. The next prime is 164191537. The reversal of 164191536 is 635191461.

164191536 is a `hidden beast` number, since 1 + 641 + 9 + 1 + 5 + 3 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 164191536.

It is not an unprimeable number, because it can be changed into a prime (164191537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 62050 + ... + 64641.

Almost surely, 2^164191536 is an apocalyptic number.

164191536 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

164191536 is an abundant number, since it is smaller than the sum of its proper divisors (311030156).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

164191536 is a wasteful number, since it uses less digits than its factorization.

164191536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126711 (or 126696 counting only the distinct ones).

The product of its digits is 19440, while the sum is 36.

The square root of 164191536 is about 12813.7245170949. The cubic root of 164191536 is about 547.5833763059.

It can be divided in two parts, 16419 and 1536, that added together give a triangular number (17955 = T₁₈₉).

The spelling of 164191536 in words is "one hundred sixty-four million, one hundred ninety-one thousand, five hundred thirty-six".