18797195040 has 384 divisors, whose sum is σ = 65840947200. Its totient is φ = 4478742528.

The previous prime is 18797195029. The next prime is 18797195057. The reversal of 18797195040 is 4059179781.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 31380661 + ... + 31381259.

It is an arithmetic number, because the mean of its divisors is an integer number (171460800).

Almost surely, 2^18797195040 is an apocalyptic number.

18797195040 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 18797195040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32920473600).

18797195040 is an abundant number, since it is smaller than the sum of its proper divisors (47043752160).

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

18797195040 is a wasteful number, since it uses less digits than its factorization.

18797195040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 784 (or 776 counting only the distinct ones).

The product of its (nonzero) digits is 635040, while the sum is 51.

The spelling of 18797195040 in words is "eighteen billion, seven hundred ninety-seven million, one hundred ninety-five thousand, forty".