166493415 has 32 divisors (see below), whose sum is σ = 297706752. Its totient is φ = 78752000.

The previous prime is 166493407. The next prime is 166493443. The reversal of 166493415 is 514394661.

It is not a de Polignac number, because 166493415 - 2³ = 166493407 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5541 + ... + 19070.

It is an arithmetic number, because the mean of its divisors is an integer number (9303336).

Almost surely, 2^166493415 is an apocalyptic number.

166493415 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

166493415 is a deficient number, since it is larger than the sum of its proper divisors (131213337).

166493415 is a wasteful number, since it uses less digits than its factorization.

166493415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24671.

The product of its digits is 77760, while the sum is 39.

The square root of 166493415 is about 12903.2327344739. The cubic root of 166493415 is about 550.1304539038.

The spelling of 166493415 in words is "one hundred sixty-six million, four hundred ninety-three thousand, four hundred fifteen".