18876950401 has 4 divisors (see below), whose sum is σ = 18878468400. Its totient is φ = 18875432404.

The previous prime is 18876950387. The next prime is 18876950447. The reversal of 18876950401 is 10405967881.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 18876950401 - 2³¹ = 16729466753 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18876950201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 740191 + ... + 765268.

It is an arithmetic number, because the mean of its divisors is an integer number (4719617100).

Almost surely, 2^18876950401 is an apocalyptic number.

It is an amenable number.

18876950401 is a deficient number, since it is larger than the sum of its proper divisors (1517999).

18876950401 is a wasteful number, since it uses less digits than its factorization.

18876950401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1517998.

The product of its (nonzero) digits is 483840, while the sum is 49.

The spelling of 18876950401 in words is "eighteen billion, eight hundred seventy-six million, nine hundred fifty thousand, four hundred one".