18750022040 has 64 divisors (see below), whose sum is σ = 42771425760. Its totient is φ = 7396531200.

The previous prime is 18750022037. The next prime is 18750022043. The reversal of 18750022040 is 4022005781.

It is an interprime number because it is at equal distance from previous prime (18750022037) and next prime (18750022043).

It is a junction number, because it is equal to n+sod(n) for n = 18750021994 and 18750022012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18750022043) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1990622 + ... + 2000018.

Almost surely, 2^18750022040 is an apocalyptic number.

18750022040 is a gapful number since it is divisible by the number (10) 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 18750022040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21385712880).

18750022040 is an abundant number, since it is smaller than the sum of its proper divisors (24021403720).

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

18750022040 is a wasteful number, since it uses less digits than its factorization.

18750022040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10092 (or 10088 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 29.

The spelling of 18750022040 in words is "eighteen billion, seven hundred fifty million, twenty-two thousand, forty".