1375631867 has 2 divisors, whose sum is σ = 1375631868. Its totient is φ = 1375631866.

The previous prime is 1375631839. The next prime is 1375631897. The reversal of 1375631867 is 7681365731.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1375631867 - 2²⁶ = 1308523003 is a prime.

It is not a weakly prime, because it can be changed into another prime (1375631897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 687815933 + 687815934.

It is an arithmetic number, because the mean of its divisors is an integer number (687815934).

Almost surely, 2^1375631867 is an apocalyptic number.

1375631867 is a deficient number, since it is larger than the sum of its proper divisors (1).

1375631867 is an equidigital number, since it uses as much as digits as its factorization.

1375631867 is an evil number, because the sum of its binary digits is even.

The product of its digits is 635040, while the sum is 47.

The square root of 1375631867 is about 37089.5115497630. The cubic root of 1375631867 is about 1112.1603536998.

The spelling of 1375631867 in words is "one billion, three hundred seventy-five million, six hundred thirty-one thousand, eight hundred sixty-seven".