1316644451 has 4 divisors (see below), whose sum is σ = 1326695304. Its totient is φ = 1306593600.

The previous prime is 1316644421. The next prime is 1316644481. The reversal of 1316644451 is 1544466131.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (1316644421) and next prime (1316644481).

It is a cyclic number.

It is not a de Polignac number, because 1316644451 - 2²⁶ = 1249535587 is a prime.

It is a super-2 number, since 2×1316644451² = 3467105220698182802, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1316644421) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 5025230 + ... + 5025491.

It is an arithmetic number, because the mean of its divisors is an integer number (331673826).

Almost surely, 2^1316644451 is an apocalyptic number.

1316644451 is a deficient number, since it is larger than the sum of its proper divisors (10050853).

1316644451 is a wasteful number, since it uses less digits than its factorization.

1316644451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10050852.

The product of its digits is 34560, while the sum is 35.

The square root of 1316644451 is about 36285.5956406947. The cubic root of 1316644451 is about 1096.0309996538.

The spelling of 1316644451 in words is "one billion, three hundred sixteen million, six hundred forty-four thousand, four hundred fifty-one".