164503770 has 32 divisors (see below), whose sum is σ = 395349120. Its totient is φ = 43807680.

The previous prime is 164503733. The next prime is 164503771. The reversal of 164503770 is 77305461.

It is a super-2 number, since 2×164503770² = 54122980688425800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (164503771) 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 15 ways as a sum of consecutive naturals, for example, 21291 + ... + 27969.

It is an arithmetic number, because the mean of its divisors is an integer number (12354660).

Almost surely, 2^164503770 is an apocalyptic number.

164503770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

164503770 is an abundant number, since it is smaller than the sum of its proper divisors (230845350).

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

164503770 is a wasteful number, since it uses less digits than its factorization.

164503770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7510.

The product of its (nonzero) digits is 17640, while the sum is 33.

The square root of 164503770 is about 12825.9023074402. The cubic root of 164503770 is about 547.9302595641.

The spelling of 164503770 in words is "one hundred sixty-four million, five hundred three thousand, seven hundred seventy".