18950750077 has 4 divisors (see below), whose sum is σ = 21658000096. Its totient is φ = 16243500060.

The previous prime is 18950750069. The next prime is 18950750099. The reversal of 18950750077 is 77005705981.

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 18950750077 - 2³ = 18950750069 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 18950750077.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18950750047) 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, 1353624999 + ... + 1353625012.

It is an arithmetic number, because the mean of its divisors is an integer number (5414500024).

Almost surely, 2^18950750077 is an apocalyptic number.

It is an amenable number.

18950750077 is a deficient number, since it is larger than the sum of its proper divisors (2707250019).

18950750077 is an equidigital number, since it uses as much as digits as its factorization.

18950750077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2707250018.

The product of its (nonzero) digits is 617400, while the sum is 49.

The spelling of 18950750077 in words is "eighteen billion, nine hundred fifty million, seven hundred fifty thousand, seventy-seven".