166161351 has 8 divisors (see below), whose sum is σ = 223699840. Its totient is φ = 109698552.

The previous prime is 166161341. The next prime is 166161367. The reversal of 166161351 is 153161661.

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

It is not a de Polignac number, because 166161351 - 2¹⁰ = 166160327 is a prime.

It is a super-2 number, since 2×166161351² = 55219189132290402, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166161301) 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, 268561 + ... + 269178.

It is an arithmetic number, because the mean of its divisors is an integer number (27962480).

Almost surely, 2^166161351 is an apocalyptic number.

166161351 is a deficient number, since it is larger than the sum of its proper divisors (57538489).

166161351 is a wasteful number, since it uses less digits than its factorization.

166161351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 537845.

The product of its digits is 3240, while the sum is 30.

The square root of 166161351 is about 12890.3588390704. The cubic root of 166161351 is about 549.7644732594.

The spelling of 166161351 in words is "one hundred sixty-six million, one hundred sixty-one thousand, three hundred fifty-one".