164231690 has 16 divisors (see below), whose sum is σ = 337848192. Its totient is φ = 56307984.

The previous prime is 164231689. The next prime is 164231693. The reversal of 164231690 is 96132461.

164231690 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×164231690² = 53944096000512200, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (164231693) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1173014 + ... + 1173153.

It is an arithmetic number, because the mean of its divisors is an integer number (21115512).

Almost surely, 2^164231690 is an apocalyptic number.

164231690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

164231690 is an abundant number, since it is smaller than the sum of its proper divisors (173616502).

164231690 is a wasteful number, since it uses less digits than its factorization.

164231690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2346181.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 164231690 is about 12815.2912569321. The cubic root of 164231690 is about 547.6280109062.

The spelling of 164231690 in words is "one hundred sixty-four million, two hundred thirty-one thousand, six hundred ninety".