166158465 has 16 divisors (see below), whose sum is σ = 290022336. Its totient is φ = 80561600.

The previous prime is 166158457. The next prime is 166158479. The reversal of 166158465 is 564851661.

It is not a de Polignac number, because 166158465 - 2³ = 166158457 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 503346 + ... + 503675.

It is an arithmetic number, because the mean of its divisors is an integer number (18126396).

Almost surely, 2^166158465 is an apocalyptic number.

166158465 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

166158465 is a deficient number, since it is larger than the sum of its proper divisors (123863871).

166158465 is a wasteful number, since it uses less digits than its factorization.

166158465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1007040.

The product of its digits is 172800, while the sum is 42.

The square root of 166158465 is about 12890.2468944547. The cubic root of 166158465 is about 549.7612903502.

The spelling of 166158465 in words is "one hundred sixty-six million, one hundred fifty-eight thousand, four hundred sixty-five".