18244561354 has 32 divisors (see below), whose sum is σ = 29024386560. Its totient is φ = 8583391872.

The previous prime is 18244561351. The next prime is 18244561399. The reversal of 18244561354 is 45316544281.

It is a self number, because there is not a number n which added to its sum of digits gives 18244561354.

It is not an unprimeable number, because it can be changed into a prime (18244561351) 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, 1299279 + ... + 1313245.

It is an arithmetic number, because the mean of its divisors is an integer number (907012080).

Almost surely, 2^18244561354 is an apocalyptic number.

18244561354 is a deficient number, since it is larger than the sum of its proper divisors (10779825206).

18244561354 is a wasteful number, since it uses less digits than its factorization.

18244561354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14454.

The product of its digits is 460800, while the sum is 43.

The spelling of 18244561354 in words is "eighteen billion, two hundred forty-four million, five hundred sixty-one thousand, three hundred fifty-four".