1316667901 has 4 divisors (see below), whose sum is σ = 1394118972. Its totient is φ = 1239216832.

The previous prime is 1316667899. The next prime is 1316667967. The reversal of 1316667901 is 1097666131.

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

It can be written as a sum of positive squares in 2 ways, for example, as 446476900 + 870191001 = 21130^2 + 29499^2 .

It is a cyclic number.

It is not a de Polignac number, because 1316667901 - 2¹ = 1316667899 is a prime.

It is a super-2 number, since 2×1316667901² = 3467228723047491602, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1316667601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38725510 + ... + 38725543.

It is an arithmetic number, because the mean of its divisors is an integer number (348529743).

Almost surely, 2^1316667901 is an apocalyptic number.

It is an amenable number.

1316667901 is a deficient number, since it is larger than the sum of its proper divisors (77451071).

1316667901 is an equidigital number, since it uses as much as digits as its factorization.

1316667901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77451070.

The product of its (nonzero) digits is 40824, while the sum is 40.

The square root of 1316667901 is about 36285.9187702337. The cubic root of 1316667901 is about 1096.0375065419.

The spelling of 1316667901 in words is "one billion, three hundred sixteen million, six hundred sixty-seven thousand, nine hundred one".