18736412 has 6 divisors (see below), whose sum is σ = 32788728. Its totient is φ = 9368204.

The previous prime is 18736411. The next prime is 18736427. The reversal of 18736412 is 21463781.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18736411) by changing a digit.

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 as a sum of consecutive naturals, namely, 2342048 + ... + 2342055.

It is an arithmetic number, because the mean of its divisors is an integer number (5464788).

Almost surely, 2^18736412 is an apocalyptic number.

It is an amenable number.

18736412 is a deficient number, since it is larger than the sum of its proper divisors (14052316).

18736412 is a wasteful number, since it uses less digits than its factorization.

18736412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4684107 (or 4684105 counting only the distinct ones).

The product of its digits is 8064, while the sum is 32.

The square root of 18736412 is about 4328.5577274654. The cubic root of 18736412 is about 265.6004516553.

The spelling of 18736412 in words is "eighteen million, seven hundred thirty-six thousand, four hundred twelve".