1387197607 has 2 divisors, whose sum is σ = 1387197608. Its totient is φ = 1387197606.

The previous prime is 1387197593. The next prime is 1387197661. The reversal of 1387197607 is 7067917831.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1387197607 - 2⁷ = 1387197479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1387197667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 693598803 + 693598804.

It is an arithmetic number, because the mean of its divisors is an integer number (693598804).

Almost surely, 2^1387197607 is an apocalyptic number.

1387197607 is a deficient number, since it is larger than the sum of its proper divisors (1).

1387197607 is an equidigital number, since it uses as much as digits as its factorization.

1387197607 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 444528, while the sum is 49.

The square root of 1387197607 is about 37245.1017853355. The cubic root of 1387197607 is about 1115.2685195887.

The spelling of 1387197607 in words is "one billion, three hundred eighty-seven million, one hundred ninety-seven thousand, six hundred seven".