1366958387 has 16 divisors (see below), whose sum is σ = 1422489600. Its totient is φ = 1312766400.

The previous prime is 1366958353. The next prime is 1366958393. The reversal of 1366958387 is 7838596631.

It is not a de Polignac number, because 1366958387 - 2⁶ = 1366958323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1366958687) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 580262 + ... + 582612.

It is an arithmetic number, because the mean of its divisors is an integer number (88905600).

Almost surely, 2^1366958387 is an apocalyptic number.

1366958387 is a deficient number, since it is larger than the sum of its proper divisors (55531213).

1366958387 is a wasteful number, since it uses less digits than its factorization.

1366958387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2626.

The product of its digits is 6531840, while the sum is 56.

The square root of 1366958387 is about 36972.4003413357. The cubic root of 1366958387 is about 1109.8180008939.

The spelling of 1366958387 in words is "one billion, three hundred sixty-six million, nine hundred fifty-eight thousand, three hundred eighty-seven".