166167387 has 24 divisors (see below), whose sum is σ = 252099744. Its totient is φ = 105266304.

The previous prime is 166167377. The next prime is 166167389. The reversal of 166167387 is 783761661.

It is not a de Polignac number, because 166167387 - 2¹¹ = 166165339 is a prime.

It is a super-2 number, since 2×166167387² = 55223201004815538, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (166167389) 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, 29943 + ... + 35055.

It is an arithmetic number, because the mean of its divisors is an integer number (10504156).

Almost surely, 2^166167387 is an apocalyptic number.

166167387 is a deficient number, since it is larger than the sum of its proper divisors (85932357).

166167387 is a wasteful number, since it uses less digits than its factorization.

166167387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5299 (or 5296 counting only the distinct ones).

The product of its digits is 254016, while the sum is 45.

The square root of 166167387 is about 12890.5929654147. The cubic root of 166167387 is about 549.7711301186.

The spelling of 166167387 in words is "one hundred sixty-six million, one hundred sixty-seven thousand, three hundred eighty-seven".