18751964375 has 10 divisors (see below), whose sum is σ = 23432455464. Its totient is φ = 15001571000.

The previous prime is 18751964347. The next prime is 18751964417. The reversal of 18751964375 is 57346915781.

It is a happy number.

It is not a de Polignac number, because 18751964375 - 2¹⁶ = 18751898839 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18751964375.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 15000947 + ... + 15002196.

Almost surely, 2^18751964375 is an apocalyptic number.

18751964375 is a deficient number, since it is larger than the sum of its proper divisors (4680491089).

18751964375 is an frugal number, since it uses more digits than its factorization.

18751964375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30003163 (or 30003148 counting only the distinct ones).

The product of its digits is 6350400, while the sum is 56.

The spelling of 18751964375 in words is "eighteen billion, seven hundred fifty-one million, nine hundred sixty-four thousand, three hundred seventy-five".