18674669 has 6 divisors (see below), whose sum is σ = 20221866. Its totient is φ = 17238000.

The previous prime is 18674659. The next prime is 18674671. The reversal of 18674669 is 96647681.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 722500 + 17952169 = 850^2 + 4237^2 .

It is a de Polignac number, because none of the positive numbers 2^k-18674669 is a prime.

It is a super-2 number, since 2×18674669² = 697486524519122, 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 (18674659) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 55082 + ... + 55419.

It is an arithmetic number, because the mean of its divisors is an integer number (3370311).

Almost surely, 2^18674669 is an apocalyptic number.

It is an amenable number.

18674669 is a deficient number, since it is larger than the sum of its proper divisors (1547197).

18674669 is a wasteful number, since it uses less digits than its factorization.

18674669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110527 (or 110514 counting only the distinct ones).

The product of its digits is 435456, while the sum is 47.

The square root of 18674669 is about 4321.4197898376. The cubic root of 18674669 is about 265.3083819467.

The spelling of 18674669 in words is "eighteen million, six hundred seventy-four thousand, six hundred sixty-nine".