18370421619 has 16 divisors (see below), whose sum is σ = 26767601280. Its totient is φ = 11114010560.

The previous prime is 18370421611. The next prime is 18370421621. The reversal of 18370421619 is 91612407381.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 18370421619 - 2³ = 18370421611 is a prime.

It is a super-2 number, since 2×18370421619² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18370421611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 470397 + ... + 507950.

It is an arithmetic number, because the mean of its divisors is an integer number (1672975080).

Almost surely, 2^18370421619 is an apocalyptic number.

18370421619 is a deficient number, since it is larger than the sum of its proper divisors (8397179661).

18370421619 is a wasteful number, since it uses less digits than its factorization.

18370421619 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 978930.

The product of its (nonzero) digits is 72576, while the sum is 42.

The spelling of 18370421619 in words is "eighteen billion, three hundred seventy million, four hundred twenty-one thousand, six hundred nineteen".