164120091 has 8 divisors (see below), whose sum is σ = 231699024. Its totient is φ = 102977280.

The previous prime is 164120087. The next prime is 164120137. The reversal of 164120091 is 190021461.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 164120091 - 2² = 164120087 is a prime.

It is not an unprimeable number, because it can be changed into a prime (164120041) 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, 1608970 + ... + 1609071.

It is an arithmetic number, because the mean of its divisors is an integer number (28962378).

Almost surely, 2^164120091 is an apocalyptic number.

164120091 is a deficient number, since it is larger than the sum of its proper divisors (67578933).

164120091 is a wasteful number, since it uses less digits than its factorization.

164120091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3218061.

The product of its (nonzero) digits is 432, while the sum is 24.

The square root of 164120091 is about 12810.9363826381. The cubic root of 164120091 is about 547.5039410905.

The spelling of 164120091 in words is "one hundred sixty-four million, one hundred twenty thousand, ninety-one".