18953619846 has 32 divisors (see below), whose sum is σ = 44056846080. Its totient is φ = 5323534176.

The previous prime is 18953619799. The next prime is 18953619847. The reversal of 18953619846 is 64891635981.

It is a self number, because there is not a number n which added to its sum of digits gives 18953619846.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18953619847) 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, 3821901 + ... + 3826856.

It is an arithmetic number, because the mean of its divisors is an integer number (1376776440).

Almost surely, 2^18953619846 is an apocalyptic number.

18953619846 is an abundant number, since it is smaller than the sum of its proper divisors (25103226234).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18953619846 is a wasteful number, since it uses less digits than its factorization.

18953619846 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7648828.

The product of its digits is 11197440, while the sum is 60.

The spelling of 18953619846 in words is "eighteen billion, nine hundred fifty-three million, six hundred nineteen thousand, eight hundred forty-six".