18722362145940 has 48 divisors (see below), whose sum is σ = 58247348900160. Its totient is φ = 4992629905440.

The previous prime is 18722362145939. The next prime is 18722362145947. The reversal of 18722362145940 is 4954126322781.

It is a happy number.

18722362145940 is a `hidden beast` number, since 1 + 8 + 7 + 2 + 2 + 3 + 621 + 4 + 5 + 9 + 4 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18722362145947) 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, 17335519966 + ... + 17335521045.

It is an arithmetic number, because the mean of its divisors is an integer number (1213486435420).

It is a 1-persistent number, because it is pandigital, but 2⋅18722362145940 = 37444724291880 is not.

Almost surely, 2^{18722362145940} is an apocalyptic number.

18722362145940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18722362145940 is an abundant number, since it is smaller than the sum of its proper divisors (39524986754220).

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

18722362145940 is a wasteful number, since it uses less digits than its factorization.

18722362145940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34671041029 (or 34671041021 counting only the distinct ones).

The product of its (nonzero) digits is 5806080, while the sum is 54.

The spelling of 18722362145940 in words is "eighteen trillion, seven hundred twenty-two billion, three hundred sixty-two million, one hundred forty-five thousand, nine hundred forty".