999164156 has 6 divisors (see below), whose sum is σ = 1748537280. Its totient is φ = 499582076.

The previous prime is 999164147. The next prime is 999164161. The reversal of 999164156 is 651461999.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124895516 + ... + 124895523.

It is an arithmetic number, because the mean of its divisors is an integer number (291422880).

Almost surely, 2^999164156 is an apocalyptic number.

It is an amenable number.

999164156 is a deficient number, since it is larger than the sum of its proper divisors (749373124).

999164156 is a wasteful number, since it uses less digits than its factorization.

999164156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249791043 (or 249791041 counting only the distinct ones).

The product of its digits is 524880, while the sum is 50.

The square root of 999164156 is about 31609.5579848881. The cubic root of 999164156 is about 999.7213076711.

It can be divided in two parts, 9991 and 64156, that added together give a palindrome (74147).

The spelling of 999164156 in words is "nine hundred ninety-nine million, one hundred sixty-four thousand, one hundred fifty-six".