18049262399 has 16 divisors (see below), whose sum is σ = 20811141120. Its totient is φ = 15333533280.

The previous prime is 18049262383. The next prime is 18049262437. The reversal of 18049262399 is 99326294081.

It is a cyclic number.

It is not a de Polignac number, because 18049262399 - 2⁴ = 18049262383 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18049262399.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18049262299) 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, 748322 + ... + 772064.

It is an arithmetic number, because the mean of its divisors is an integer number (1300696320).

Almost surely, 2^18049262399 is an apocalyptic number.

18049262399 is a deficient number, since it is larger than the sum of its proper divisors (2761878721).

18049262399 is a wasteful number, since it uses less digits than its factorization.

18049262399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24710.

The product of its (nonzero) digits is 1679616, while the sum is 53.

The spelling of 18049262399 in words is "eighteen billion, forty-nine million, two hundred sixty-two thousand, three hundred ninety-nine".