1397769388518 has 32 divisors (see below), whose sum is σ = 2950084765440. Its totient is φ = 440289004320.

The previous prime is 1397769388513. The next prime is 1397769388523. The reversal of 1397769388518 is 8158839677931.

It is an interprime number because it is at equal distance from previous prime (1397769388513) and next prime (1397769388523).

It is a self number, because there is not a number n which added to its sum of digits gives 1397769388518.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1397769388513) 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, 15396978 + ... + 15487493.

It is an arithmetic number, because the mean of its divisors is an integer number (92190148920).

Almost surely, 2^{1397769388518} is an apocalyptic number.

1397769388518 is an abundant number, since it is smaller than the sum of its proper divisors (1552315376922).

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

1397769388518 is a wasteful number, since it uses less digits than its factorization.

1397769388518 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30884892.

The product of its digits is 548674560, while the sum is 75.

The spelling of 1397769388518 in words is "one trillion, three hundred ninety-seven billion, seven hundred sixty-nine million, three hundred eighty-eight thousand, five hundred eighteen".