165938480 has 40 divisors (see below), whose sum is σ = 395224704. Its totient is φ = 64755200.

The previous prime is 165938441. The next prime is 165938501. The reversal of 165938480 is 84839561.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22016 + ... + 28575.

Almost surely, 2^165938480 is an apocalyptic number.

165938480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

165938480 is an abundant number, since it is smaller than the sum of its proper divisors (229286224).

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

165938480 is a wasteful number, since it uses less digits than its factorization.

165938480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50645 (or 50639 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 44.

The square root of 165938480 is about 12881.7110664694. The cubic root of 165938480 is about 549.5185649312.

The spelling of 165938480 in words is "one hundred sixty-five million, nine hundred thirty-eight thousand, four hundred eighty".