1316400855 has 32 divisors (see below), whose sum is σ = 2625965568. Its totient is φ = 547075200.

The previous prime is 1316400853. The next prime is 1316400859. The reversal of 1316400855 is 5580046131.

It is not a de Polignac number, because 1316400855 - 2¹ = 1316400853 is a prime.

It is a super-2 number, since 2×1316400855² = 3465822422089462050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1316400851) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 568716 + ... + 571025.

It is an arithmetic number, because the mean of its divisors is an integer number (82061424).

Almost surely, 2^1316400855 is an apocalyptic number.

1316400855 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1316400855 is a deficient number, since it is larger than the sum of its proper divisors (1309564713).

1316400855 is a wasteful number, since it uses less digits than its factorization.

1316400855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1139767.

The product of its (nonzero) digits is 14400, while the sum is 33.

The square root of 1316400855 is about 36282.2388366539. The cubic root of 1316400855 is about 1095.9634022513.

Adding to 1316400855 its reverse (5580046131), we get a palindrome (6896446986).

The spelling of 1316400855 in words is "one billion, three hundred sixteen million, four hundred thousand, eight hundred fifty-five".