16169994 has 24 divisors (see below), whose sum is σ = 36244260. Its totient is φ = 5203968.

The previous prime is 16169987. The next prime is 16170001. The reversal of 16169994 is 49996161.

It is an interprime number because it is at equal distance from previous prime (16169987) and next prime (16170001).

It can be written as a sum of positive squares in 2 ways, for example, as 13727025 + 2442969 = 3705^2 + 1563^2 .

It is a super-2 number, since 2×16169994² = 522937411920072, which contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14967 + ... + 16010.

Almost surely, 2^16169994 is an apocalyptic number.

16169994 is an abundant number, since it is smaller than the sum of its proper divisors (20074266).

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

16169994 is a wasteful number, since it uses less digits than its factorization.

16169994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31014 (or 31011 counting only the distinct ones).

The product of its digits is 104976, while the sum is 45.

The square root of 16169994 is about 4021.1931065295. The cubic root of 16169994 is about 252.8734805657.

The spelling of 16169994 in words is "sixteen million, one hundred sixty-nine thousand, nine hundred ninety-four".