1387265707 has 2 divisors, whose sum is σ = 1387265708. Its totient is φ = 1387265706.

The previous prime is 1387265683. The next prime is 1387265729. The reversal of 1387265707 is 7075627831.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1387265707 - 2¹⁵ = 1387232939 is a prime.

It is a super-2 number, since 2×1387265707² = 3849012283636419698, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1387265507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 693632853 + 693632854.

It is an arithmetic number, because the mean of its divisors is an integer number (693632854).

Almost surely, 2^1387265707 is an apocalyptic number.

1387265707 is a deficient number, since it is larger than the sum of its proper divisors (1).

1387265707 is an equidigital number, since it uses as much as digits as its factorization.

1387265707 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 493920, while the sum is 46.

The square root of 1387265707 is about 37246.0159882906. The cubic root of 1387265707 is about 1115.2867694624.

The spelling of 1387265707 in words is "one billion, three hundred eighty-seven million, two hundred sixty-five thousand, seven hundred seven".