167945661 has 24 divisors (see below), whose sum is σ = 262525536. Its totient is φ = 102846240.

The previous prime is 167945653. The next prime is 167945663. The reversal of 167945661 is 166549761.

167945661 is a `hidden beast` number, since 16 + 79 + 4 + 566 + 1 = 666.

It is not a de Polignac number, because 167945661 - 2³ = 167945653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (167945663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21286 + ... + 28088.

It is an arithmetic number, because the mean of its divisors is an integer number (10938564).

Almost surely, 2^167945661 is an apocalyptic number.

It is an amenable number.

167945661 is a deficient number, since it is larger than the sum of its proper divisors (94579875).

167945661 is a wasteful number, since it uses less digits than its factorization.

167945661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7033 (or 7030 counting only the distinct ones).

The product of its digits is 272160, while the sum is 45.

The square root of 167945661 is about 12959.3850548550. The cubic root of 167945661 is about 551.7253379163.

The spelling of 167945661 in words is "one hundred sixty-seven million, nine hundred forty-five thousand, six hundred sixty-one".