1366400315 has 16 divisors (see below), whose sum is σ = 1874688960. Its totient is φ = 936576000.

The previous prime is 1366400303. The next prime is 1366400323. The reversal of 1366400315 is 5130046631.

It is a happy number.

It is not a de Polignac number, because 1366400315 - 2⁶ = 1366400251 is a prime.

It is a Smith number, since the sum of its digits (29) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 98531 + ... + 111539.

It is an arithmetic number, because the mean of its divisors is an integer number (117168060).

Almost surely, 2^1366400315 is an apocalyptic number.

1366400315 is a deficient number, since it is larger than the sum of its proper divisors (508288645).

1366400315 is a wasteful number, since it uses less digits than its factorization.

1366400315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16022.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 1366400315 is about 36964.8524276778. The cubic root of 1366400315 is about 1109.6669495616. Note that the first 3 decimals are identical.

Adding to 1366400315 its reverse (5130046631), we get a palindrome (6496446946).

The spelling of 1366400315 in words is "one billion, three hundred sixty-six million, four hundred thousand, three hundred fifteen".