164582990 has 48 divisors (see below), whose sum is σ = 350711424. Its totient is φ = 55239360.

The previous prime is 164582969. The next prime is 164583011. The reversal of 164582990 is 99285461.

It is an interprime number because it is at equal distance from previous prime (164582969) and next prime (164583011).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10499 + ... + 20961.

It is an arithmetic number, because the mean of its divisors is an integer number (7306488).

Almost surely, 2^164582990 is an apocalyptic number.

164582990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

164582990 is an abundant number, since it is smaller than the sum of its proper divisors (186128434).

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

164582990 is a wasteful number, since it uses less digits than its factorization.

164582990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10505 (or 10494 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 44.

The square root of 164582990 is about 12828.9902174723. The cubic root of 164582990 is about 548.0182009512.

The spelling of 164582990 in words is "one hundred sixty-four million, five hundred eighty-two thousand, nine hundred ninety".