1381625867 has 2 divisors, whose sum is σ = 1381625868. Its totient is φ = 1381625866.

The previous prime is 1381625857. The next prime is 1381625873. The reversal of 1381625867 is 7685261831.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1381625867 - 2¹⁴ = 1381609483 is a prime.

It is not a weakly prime, because it can be changed into another prime (1381625807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 690812933 + 690812934.

It is an arithmetic number, because the mean of its divisors is an integer number (690812934).

Almost surely, 2^1381625867 is an apocalyptic number.

1381625867 is a deficient number, since it is larger than the sum of its proper divisors (1).

1381625867 is an equidigital number, since it uses as much as digits as its factorization.

1381625867 is an evil number, because the sum of its binary digits is even.

The product of its digits is 483840, while the sum is 47.

The square root of 1381625867 is about 37170.2282344351. The cubic root of 1381625867 is about 1113.7733410150.

The spelling of 1381625867 in words is "one billion, three hundred eighty-one million, six hundred twenty-five thousand, eight hundred sixty-seven".