18940499495 has 8 divisors (see below), whose sum is σ = 23157441216. Its totient is φ = 14866505056.

The previous prime is 18940499453. The next prime is 18940499503. The reversal of 18940499495 is 59499404981.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18940499495 - 2²⁰ = 18939450919 is a prime.

It is a super-2 number, since 2×18940499495² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35736527 + ... + 35737056.

It is an arithmetic number, because the mean of its divisors is an integer number (2894680152).

Almost surely, 2^18940499495 is an apocalyptic number.

18940499495 is a deficient number, since it is larger than the sum of its proper divisors (4216941721).

18940499495 is an equidigital number, since it uses as much as digits as its factorization.

18940499495 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71473641.

The product of its (nonzero) digits is 16796160, while the sum is 62.

The spelling of 18940499495 in words is "eighteen billion, nine hundred forty million, four hundred ninety-nine thousand, four hundred ninety-five".