1396732818393 has 36 divisors (see below), whose sum is σ = 2220328443060. Its totient is φ = 845457845760.

The previous prime is 1396732818329. The next prime is 1396732818409. The reversal of 1396732818393 is 3938182376931.

1396732818393 is a `hidden beast` number, since 1 + 396 + 7 + 3 + 2 + 81 + 83 + 93 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1266968606409 + 129764211984 = 1125597^2 + 360228^2 .

It is not a de Polignac number, because 1396732818393 - 2⁶ = 1396732818329 is a prime.

It is a super-3 number, since 3×1396732818393³ (a number of 37 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1396732818393.

It is not an unprimeable number, because it can be changed into a prime (1396732818193) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 88305 + ... + 1673697.

It is an arithmetic number, because the mean of its divisors is an integer number (61675790085).

Almost surely, 2^{1396732818393} is an apocalyptic number.

It is an amenable number.

1396732818393 is a deficient number, since it is larger than the sum of its proper divisors (823595624667).

1396732818393 is a wasteful number, since it uses less digits than its factorization.

1396732818393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1586230 (or 1586216 counting only the distinct ones).

The product of its digits is 35271936, while the sum is 63.

The spelling of 1396732818393 in words is "one trillion, three hundred ninety-six billion, seven hundred thirty-two million, eight hundred eighteen thousand, three hundred ninety-three".