18797755746 has 128 divisors (see below), whose sum is σ = 51341506560. Its totient is φ = 4436812800.

The previous prime is 18797755741. The next prime is 18797755807. The reversal of 18797755746 is 64755779781.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is not an unprimeable number, because it can be changed into a prime (18797755741) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 186501 + ... + 269031.

It is an arithmetic number, because the mean of its divisors is an integer number (401105520).

Almost surely, 2^18797755746 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18797755746, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25670753280).

18797755746 is an abundant number, since it is smaller than the sum of its proper divisors (32543750814).

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

18797755746 is a wasteful number, since it uses less digits than its factorization.

18797755746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82600.

The product of its digits is 103723200, while the sum is 66.

The spelling of 18797755746 in words is "eighteen billion, seven hundred ninety-seven million, seven hundred fifty-five thousand, seven hundred forty-six".