166413951 has 24 divisors (see below), whose sum is σ = 276032640. Its totient is φ = 95547600.

The previous prime is 166413943. The next prime is 166414009. The reversal of 166413951 is 159314661.

166413951 is a `hidden beast` number, since 1 + 6 + 641 + 3 + 9 + 5 + 1 = 666.

It is not a de Polignac number, because 166413951 - 2³ = 166413943 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166413911) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 42355 + ... + 46116.

It is an arithmetic number, because the mean of its divisors is an integer number (11501360).

Almost surely, 2^166413951 is an apocalyptic number.

166413951 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

166413951 is a deficient number, since it is larger than the sum of its proper divisors (109618689).

166413951 is a wasteful number, since it uses less digits than its factorization.

166413951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88507 (or 88504 counting only the distinct ones).

The product of its digits is 19440, while the sum is 36.

The square root of 166413951 is about 12900.1531386259. The cubic root of 166413951 is about 550.0429178630.

The spelling of 166413951 in words is "one hundred sixty-six million, four hundred thirteen thousand, nine hundred fifty-one".