1397786518152 has 48 divisors (see below), whose sum is σ = 3785777190000. Its totient is φ = 465915870816.

The previous prime is 1397786518151. The next prime is 1397786518153. The reversal of 1397786518152 is 2518156877931.

It is a happy number.

1397786518152 is a `hidden beast` number, since 1 + 39 + 7 + 7 + 86 + 518 + 1 + 5 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (1397786518151) and next prime (1397786518153).

It is a self number, because there is not a number n which added to its sum of digits gives 1397786518152.

It is not an unprimeable number, because it can be changed into a prime (1397786518151) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2535499 + ... + 3037157.

It is an arithmetic number, because the mean of its divisors is an integer number (78870358125).

Almost surely, 2^{1397786518152} is an apocalyptic number.

1397786518152 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1397786518152 is an abundant number, since it is smaller than the sum of its proper divisors (2387990671848).

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

1397786518152 is a wasteful number, since it uses less digits than its factorization.

1397786518152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 540370 (or 540363 counting only the distinct ones).

The product of its digits is 25401600, while the sum is 63.

The spelling of 1397786518152 in words is "one trillion, three hundred ninety-seven billion, seven hundred eighty-six million, five hundred eighteen thousand, one hundred fifty-two".