166334390 has 16 divisors (see below), whose sum is σ = 312419808. Its totient is φ = 63640896.

The previous prime is 166334381. The next prime is 166334411. The reversal of 166334390 is 93433661.

It is a self number, because there is not a number n which added to its sum of digits gives 166334390.

It is a congruent number.

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, 361367 + ... + 361826.

It is an arithmetic number, because the mean of its divisors is an integer number (19526238).

Almost surely, 2^166334390 is an apocalyptic number.

166334390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

166334390 is a deficient number, since it is larger than the sum of its proper divisors (146085418).

166334390 is a wasteful number, since it uses less digits than its factorization.

166334390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 723223.

The product of its (nonzero) digits is 34992, while the sum is 35.

The square root of 166334390 is about 12897.0690468804. The cubic root of 166334390 is about 549.9552470473.

The spelling of 166334390 in words is "one hundred sixty-six million, three hundred thirty-four thousand, three hundred ninety".