18632264944 has 20 divisors (see below), whose sum is σ = 36104227624. Its totient is φ = 9315044928.

The previous prime is 18632264929. The next prime is 18632264947. The reversal of 18632264944 is 44946223681.

It is a super-2 number, since 2×18632264944² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18632264947) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83614 + ... + 210370.

Almost surely, 2^18632264944 is an apocalyptic number.

It is an amenable number.

18632264944 is a deficient number, since it is larger than the sum of its proper divisors (17471962680).

18632264944 is a wasteful number, since it uses less digits than its factorization.

18632264944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135952 (or 135946 counting only the distinct ones).

The product of its digits is 1990656, while the sum is 49.

The spelling of 18632264944 in words is "eighteen billion, six hundred thirty-two million, two hundred sixty-four thousand, nine hundred forty-four".