164992155 has 8 divisors (see below), whose sum is σ = 263987472. Its totient is φ = 87995808.

The previous prime is 164992153. The next prime is 164992183. The reversal of 164992155 is 551299461.

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

It is not a de Polignac number, because 164992155 - 2¹ = 164992153 is a prime.

It is a super-2 number, since 2×164992155² = 54444822423088050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (164992151) 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, 5499724 + ... + 5499753.

It is an arithmetic number, because the mean of its divisors is an integer number (32998434).

Almost surely, 2^164992155 is an apocalyptic number.

164992155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

164992155 is a deficient number, since it is larger than the sum of its proper divisors (98995317).

164992155 is a wasteful number, since it uses less digits than its factorization.

164992155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10999485.

The product of its digits is 97200, while the sum is 42.

The square root of 164992155 is about 12844.9272088245. The cubic root of 164992155 is about 548.4719625181.

The spelling of 164992155 in words is "one hundred sixty-four million, nine hundred ninety-two thousand, one hundred fifty-five".