166015494 has 40 divisors (see below), whose sum is σ = 372742920. Its totient is φ = 55227744.

The previous prime is 166015477. The next prime is 166015583. The reversal of 166015494 is 494510661.

166015494 is a `hidden beast` number, since 1 + 6 + 601 + 5 + 49 + 4 = 666.

It is a super-2 number, since 2×166015494² = 55122288496128072, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 138562 + ... + 139754.

It is an arithmetic number, because the mean of its divisors is an integer number (9318573).

Almost surely, 2^166015494 is an apocalyptic number.

166015494 is an abundant number, since it is smaller than the sum of its proper divisors (206727426).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

166015494 is a wasteful number, since it uses less digits than its factorization.

166015494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2066 (or 2057 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 166015494 is about 12884.6999965075. The cubic root of 166015494 is about 549.6035644589.

The spelling of 166015494 in words is "one hundred sixty-six million, fifteen thousand, four hundred ninety-four".