18942197760 has 272 divisors, whose sum is σ = 67380979680. Its totient is φ = 5048893440.

The previous prime is 18942197749. The next prime is 18942197773. The reversal of 18942197760 is 6779124981.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

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

It is a junction number, because it is equal to n+sod(n) for n = 18942197697 and 18942197706.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8846290 + ... + 8848430.

It is an arithmetic number, because the mean of its divisors is an integer number (247724190).

Almost surely, 2^18942197760 is an apocalyptic number.

18942197760 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 18942197760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33690489840).

18942197760 is an abundant number, since it is smaller than the sum of its proper divisors (48438781920).

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

18942197760 is an frugal number, since it uses more digits than its factorization.

18942197760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2187 (or 2151 counting only the distinct ones).

The product of its (nonzero) digits is 1524096, while the sum is 54.

The spelling of 18942197760 in words is "eighteen billion, nine hundred forty-two million, one hundred ninety-seven thousand, seven hundred sixty".