18299016440 has 16 divisors (see below), whose sum is σ = 41172787080. Its totient is φ = 7319606560.

The previous prime is 18299016419. The next prime is 18299016469. The reversal of 18299016440 is 4461099281.

It is a junction number, because it is equal to n+sod(n) for n = 18299016391 and 18299016400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 228737666 + ... + 228737745.

Almost surely, 2^18299016440 is an apocalyptic number.

18299016440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18299016440 is an abundant number, since it is smaller than the sum of its proper divisors (22873770640).

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

18299016440 is a wasteful number, since it uses less digits than its factorization.

18299016440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 457475422 (or 457475418 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 44.

The spelling of 18299016440 in words is "eighteen billion, two hundred ninety-nine million, sixteen thousand, four hundred forty".