18038887297 has 8 divisors (see below), whose sum is σ = 18084306240. Its totient is φ = 17993507280.

The previous prime is 18038887249. The next prime is 18038887309. The reversal of 18038887297 is 79278883081.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18038887297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18038087297) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1063479 + ... + 1080307.

It is an arithmetic number, because the mean of its divisors is an integer number (2260538280).

Almost surely, 2^18038887297 is an apocalyptic number.

It is an amenable number.

18038887297 is a deficient number, since it is larger than the sum of its proper divisors (45418943).

18038887297 is a wasteful number, since it uses less digits than its factorization.

18038887297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19463.

The product of its (nonzero) digits is 10838016, while the sum is 61.

The spelling of 18038887297 in words is "eighteen billion, thirty-eight million, eight hundred eighty-seven thousand, two hundred ninety-seven".