18929299896 has 48 divisors (see below), whose sum is σ = 55210460760. Its totient is φ = 5824399680.

The previous prime is 18929299843. The next prime is 18929299957. The reversal of 18929299896 is 69899292981.

It is a super-2 number, since 2×18929299896² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10110870 + ... + 10112741.

Almost surely, 2^18929299896 is an apocalyptic number.

It is an amenable number.

18929299896 is an abundant number, since it is smaller than the sum of its proper divisors (36281160864).

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

18929299896 is a wasteful number, since it uses less digits than its factorization.

18929299896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20223636 (or 20223629 counting only the distinct ones).

The product of its digits is 90699264, while the sum is 72.

The spelling of 18929299896 in words is "eighteen billion, nine hundred twenty-nine million, two hundred ninety-nine thousand, eight hundred ninety-six".