1372678393 has 4 divisors (see below), whose sum is σ = 1374718708. Its totient is φ = 1370638080.

The previous prime is 1372678367. The next prime is 1372678397. The reversal of 1372678393 is 3938762731.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3938762731 = 33083 ⋅119057.

It can be written as a sum of positive squares in 2 ways, for example, as 714653289 + 658025104 = 26733^2 + 25652^2 .

It is a cyclic number.

It is not a de Polignac number, because 1372678393 - 2¹⁷ = 1372547321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1372678397) 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, 1019148 + ... + 1020493.

It is an arithmetic number, because the mean of its divisors is an integer number (343679677).

Almost surely, 2^1372678393 is an apocalyptic number.

It is an amenable number.

1372678393 is a deficient number, since it is larger than the sum of its proper divisors (2040315).

1372678393 is an equidigital number, since it uses as much as digits as its factorization.

1372678393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2040314.

The product of its digits is 1143072, while the sum is 49.

The square root of 1372678393 is about 37049.6746679374. The cubic root of 1372678393 is about 1111.3638493574.

The spelling of 1372678393 in words is "one billion, three hundred seventy-two million, six hundred seventy-eight thousand, three hundred ninety-three".