1376398046731 has 4 divisors (see below), whose sum is σ = 1376405101872. Its totient is φ = 1376390991592.

The previous prime is 1376398046713. The next prime is 1376398046753. The reversal of 1376398046731 is 1376408936731.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1376398046731 - 2³⁷ = 1238959093259 is a prime.

It is a super-2 number, since 2×1376398046731² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1376398046791) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3226360 + ... + 3627973.

It is an arithmetic number, because the mean of its divisors is an integer number (344101275468).

Almost surely, 2^{1376398046731} is an apocalyptic number.

1376398046731 is a deficient number, since it is larger than the sum of its proper divisors (7055141).

1376398046731 is an equidigital number, since it uses as much as digits as its factorization.

1376398046731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7055140.

The product of its (nonzero) digits is 13716864, while the sum is 58.

Subtracting 1376398046731 from its reverse (1376408936731), we obtain a square (10890000 = 3300²).

The spelling of 1376398046731 in words is "one trillion, three hundred seventy-six billion, three hundred ninety-eight million, forty-six thousand, seven hundred thirty-one".