166839498 has 24 divisors (see below), whose sum is σ = 413126688. Its totient is φ = 47668392.

The previous prime is 166839487. The next prime is 166839499. The reversal of 166839498 is 894938661.

166839498 is a `hidden beast` number, since 166 + 8 + 394 + 98 = 666.

166839498 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (166839499) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 661936 + ... + 662187.

It is an arithmetic number, because the mean of its divisors is an integer number (17213612).

Almost surely, 2^166839498 is an apocalyptic number.

166839498 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

166839498 is an abundant number, since it is smaller than the sum of its proper divisors (246287190).

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

166839498 is a wasteful number, since it uses less digits than its factorization.

166839498 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1324138 (or 1324135 counting only the distinct ones).

The product of its digits is 2239488, while the sum is 54.

The square root of 166839498 is about 12916.6364816852. The cubic root of 166839498 is about 550.5113679294.

The spelling of 166839498 in words is "one hundred sixty-six million, eight hundred thirty-nine thousand, four hundred ninety-eight".