16118669 has 16 divisors (see below), whose sum is σ = 20534400. Its totient is φ = 12317184.

The previous prime is 16118657. The next prime is 16118677. The reversal of 16118669 is 96681161.

16118669 = 42² + 43² + ... + 364².

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16118669 is a prime.

It is a super-2 number, since 2×16118669² = 519622980663122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16118629) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1304 + ... + 5825.

It is an arithmetic number, because the mean of its divisors is an integer number (1283400).

Almost surely, 2^16118669 is an apocalyptic number.

16118669 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

16118669 is a deficient number, since it is larger than the sum of its proper divisors (4415731).

16118669 is a wasteful number, since it uses less digits than its factorization.

16118669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7172.

The product of its digits is 15552, while the sum is 38.

The square root of 16118669 is about 4014.8062219739. The cubic root of 16118669 is about 252.6056493482.

The spelling of 16118669 in words is "sixteen million, one hundred eighteen thousand, six hundred sixty-nine".