1381625807 has 2 divisors, whose sum is σ = 1381625808. Its totient is φ = 1381625806.

The previous prime is 1381625789. The next prime is 1381625809. The reversal of 1381625807 is 7085261831.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1381625807 - 2⁸ = 1381625551 is a prime.

Together with 1381625809, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1381625809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 690812903 + 690812904.

It is an arithmetic number, because the mean of its divisors is an integer number (690812904).

Almost surely, 2^1381625807 is an apocalyptic number.

1381625807 is a deficient number, since it is larger than the sum of its proper divisors (1).

1381625807 is an equidigital number, since it uses as much as digits as its factorization.

1381625807 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 80640, while the sum is 41.

The square root of 1381625807 is about 37170.2274273376. The cubic root of 1381625807 is about 1113.7733248924.

The spelling of 1381625807 in words is "one billion, three hundred eighty-one million, six hundred twenty-five thousand, eight hundred seven".