18995349610 has 32 divisors (see below), whose sum is σ = 35365704192. Its totient is φ = 7340833920.

The previous prime is 18995349587. The next prime is 18995349613. The reversal of 18995349610 is 1694359981.

It is a super-2 number, since 2×18995349610² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18995349613) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 182674 + ... + 267133.

It is an arithmetic number, because the mean of its divisors is an integer number (1105178256).

Almost surely, 2^18995349610 is an apocalyptic number.

18995349610 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18995349610 is a deficient number, since it is larger than the sum of its proper divisors (16370354582).

18995349610 is a wasteful number, since it uses less digits than its factorization.

18995349610 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 449958.

The product of its (nonzero) digits is 2099520, while the sum is 55.

The spelling of 18995349610 in words is "eighteen billion, nine hundred ninety-five million, three hundred forty-nine thousand, six hundred ten".