19853653100 has 18 divisors (see below), whose sum is σ = 43082427444. Its totient is φ = 7941461200.

The previous prime is 19853653093. The next prime is 19853653121. The reversal of 19853653100 is 135635891.

It is a super-2 number, since 2×19853653100² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 99268166 + ... + 99268365.

Almost surely, 2^19853653100 is an apocalyptic number.

19853653100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19853653100 is an abundant number, since it is smaller than the sum of its proper divisors (23228774344).

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

19853653100 is a wasteful number, since it uses less digits than its factorization.

19853653100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198536545 (or 198536538 counting only the distinct ones).

The product of its (nonzero) digits is 97200, while the sum is 41.

The spelling of 19853653100 in words is "nineteen billion, eight hundred fifty-three million, six hundred fifty-three thousand, one hundred".