18756462089 has 2 divisors, whose sum is σ = 18756462090. Its totient is φ = 18756462088.

The previous prime is 18756462061. The next prime is 18756462091. The reversal of 18756462089 is 98026465781.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16759891600 + 1996570489 = 129460^2 + 44683^2 .

It is a cyclic number.

It is not a de Polignac number, because 18756462089 - 2⁸ = 18756461833 is a prime.

Together with 18756462091, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (18756462589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9378231044 + 9378231045.

It is an arithmetic number, because the mean of its divisors is an integer number (9378231045).

Almost surely, 2^18756462089 is an apocalyptic number.

It is an amenable number.

18756462089 is a deficient number, since it is larger than the sum of its proper divisors (1).

18756462089 is an equidigital number, since it uses as much as digits as its factorization.

18756462089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5806080, while the sum is 56.

The spelling of 18756462089 in words is "eighteen billion, seven hundred fifty-six million, four hundred sixty-two thousand, eighty-nine".