18280662436 has 27 divisors (see below), whose sum is σ = 32507983809. Its totient is φ = 8994984768.

The previous prime is 18280662431. The next prime is 18280662467. The reversal of 18280662436 is 63426608281.

The square root of 18280662436 is 135206.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 5610908836 + 12669753600 = 74906^2 + 112560^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18280662431) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 18117100 + ... + 18118108.

Almost surely, 2^18280662436 is an apocalyptic number.

18280662436 is the 135206-th square number.

It is an amenable number.

18280662436 is a deficient number, since it is larger than the sum of its proper divisors (14227321373).

18280662436 is an frugal number, since it uses more digits than its factorization.

18280662436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2156 (or 1078 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 46.

The spelling of 18280662436 in words is "eighteen billion, two hundred eighty million, six hundred sixty-two thousand, four hundred thirty-six".