164643477930 has 80 divisors (see below), whose sum is σ = 442833747840. Its totient is φ = 43892458848.

The previous prime is 164643477917. The next prime is 164643477941. The reversal of 164643477930 is 39774346461.

164643477930 is a `hidden beast` number, since 1 + 6 + 46 + 43 + 477 + 93 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 3024291 + ... + 3078249.

It is an arithmetic number, because the mean of its divisors is an integer number (5535421848).

Almost surely, 2^164643477930 is an apocalyptic number.

164643477930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

164643477930 is an abundant number, since it is smaller than the sum of its proper divisors (278190269910).

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

164643477930 is a wasteful number, since it uses less digits than its factorization.

164643477930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57745 (or 57736 counting only the distinct ones).

The product of its (nonzero) digits is 9144576, while the sum is 54.

The spelling of 164643477930 in words is "one hundred sixty-four billion, six hundred forty-three million, four hundred seventy-seven thousand, nine hundred thirty".