18953178104 has 24 divisors (see below), whose sum is σ = 40616160840. Its totient is φ = 8122349088.

The previous prime is 18953178077. The next prime is 18953178107. The reversal of 18953178104 is 40187135981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18953178107) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1021034 + ... + 1039430.

It is an arithmetic number, because the mean of its divisors is an integer number (1692340035).

Almost surely, 2^18953178104 is an apocalyptic number.

18953178104 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

18953178104 is an abundant number, since it is smaller than the sum of its proper divisors (21662982736).

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

18953178104 is an frugal number, since it uses more digits than its factorization.

18953178104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36807 (or 18406 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 47.

The spelling of 18953178104 in words is "eighteen billion, nine hundred fifty-three million, one hundred seventy-eight thousand, one hundred four".