166979430 has 24 divisors (see below), whose sum is σ = 434146752. Its totient is φ = 44527824.

The previous prime is 166979369. The next prime is 166979431. The reversal of 166979430 is 34979661.

166979430 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166979431) 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, 927574 + ... + 927753.

It is an arithmetic number, because the mean of its divisors is an integer number (18089448).

Almost surely, 2^166979430 is an apocalyptic number.

166979430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

166979430 is an abundant number, since it is smaller than the sum of its proper divisors (267167322).

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

166979430 is a wasteful number, since it uses less digits than its factorization.

166979430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1855340 (or 1855337 counting only the distinct ones).

The product of its (nonzero) digits is 244944, while the sum is 45.

The square root of 166979430 is about 12922.0520816161. The cubic root of 166979430 is about 550.6652336326.

The spelling of 166979430 in words is "one hundred sixty-six million, nine hundred seventy-nine thousand, four hundred thirty".