164831690 has 16 divisors (see below), whose sum is σ = 296850528. Its totient is φ = 65898576.

The previous prime is 164831659. The next prime is 164831701. The reversal of 164831690 is 96138461.

It is a super-2 number, since 2×164831690² = 54338972056512200, which contains 22 as substring.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 26849 + ... + 32411.

It is an arithmetic number, because the mean of its divisors is an integer number (18553158).

Almost surely, 2^164831690 is an apocalyptic number.

164831690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

164831690 is a deficient number, since it is larger than the sum of its proper divisors (132018838).

164831690 is a wasteful number, since it uses less digits than its factorization.

164831690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8533.

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 164831690 is about 12838.6794492269. The cubic root of 164831690 is about 548.2940972922.

The spelling of 164831690 in words is "one hundred sixty-four million, eight hundred thirty-one thousand, six hundred ninety".