166149898 has 16 divisors (see below), whose sum is σ = 255701376. Its totient is φ = 80943840.

The previous prime is 166149887. The next prime is 166149913. The reversal of 166149898 is 898941661.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5263 + ... + 18973.

It is an arithmetic number, because the mean of its divisors is an integer number (15981336).

Almost surely, 2^166149898 is an apocalyptic number.

166149898 is a deficient number, since it is larger than the sum of its proper divisors (89551478).

166149898 is a wasteful number, since it uses less digits than its factorization.

166149898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13869.

The product of its digits is 746496, while the sum is 52.

The square root of 166149898 is about 12889.9145846666. The cubic root of 166149898 is about 549.7518417677.

The spelling of 166149898 in words is "one hundred sixty-six million, one hundred forty-nine thousand, eight hundred ninety-eight".