18900074319 has 32 divisors (see below), whose sum is σ = 29116555776. Its totient is φ = 10681528320.

The previous prime is 18900074317. The next prime is 18900074321. The reversal of 18900074319 is 91347000981.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (18900074317) and next prime (18900074321).

It is not a de Polignac number, because 18900074319 - 2¹ = 18900074317 is a prime.

It is a super-2 number, since 2×18900074319² (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 (18900074317) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5023399 + ... + 5027159.

It is an arithmetic number, because the mean of its divisors is an integer number (909892368).

Almost surely, 2^18900074319 is an apocalyptic number.

18900074319 is a deficient number, since it is larger than the sum of its proper divisors (10216481457).

18900074319 is a wasteful number, since it uses less digits than its factorization.

18900074319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6335.

The product of its (nonzero) digits is 54432, while the sum is 42.

The spelling of 18900074319 in words is "eighteen billion, nine hundred million, seventy-four thousand, three hundred nineteen".