166994794 has 16 divisors (see below), whose sum is σ = 254671560. Its totient is φ = 82114560.

The previous prime is 166994783. The next prime is 166994803. The reversal of 166994794 is 497499661.

It is a happy number.

166994794 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 136025569 + 30969225 = 11663^2 + 5565^2 .

It is a super-2 number, since 2×166994794² = 55774522446204872, which contains 22 as substring.

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, 31924 + ... + 36784.

Almost surely, 2^166994794 is an apocalyptic number.

166994794 is a deficient number, since it is larger than the sum of its proper divisors (87676766).

166994794 is a wasteful number, since it uses less digits than its factorization.

166994794 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5145.

The product of its digits is 2939328, while the sum is 55.

The square root of 166994794 is about 12922.6465555628. The cubic root of 166994794 is about 550.6821222621.

The spelling of 166994794 in words is "one hundred sixty-six million, nine hundred ninety-four thousand, seven hundred ninety-four".