18197754416 has 40 divisors (see below), whose sum is σ = 36460713984. Its totient is φ = 8789590080.

The previous prime is 18197754409. The next prime is 18197754427. The reversal of 18197754416 is 61445779181.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 246665 + ... + 311831.

Almost surely, 2^18197754416 is an apocalyptic number.

18197754416 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18197754416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18230356992).

18197754416 is an abundant number, since it is smaller than the sum of its proper divisors (18262959568).

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

18197754416 is a wasteful number, since it uses less digits than its factorization.

18197754416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65769 (or 65763 counting only the distinct ones).

The product of its digits is 1693440, while the sum is 53.

The spelling of 18197754416 in words is "eighteen billion, one hundred ninety-seven million, seven hundred fifty-four thousand, four hundred sixteen".