1337799891 has 8 divisors (see below), whose sum is σ = 1783903680. Its totient is φ = 891781352.

The previous prime is 1337799877. The next prime is 1337799919. The reversal of 1337799891 is 1989977331.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1337799891 - 2¹¹ = 1337797843 is a prime.

It is a super-2 number, since 2×1337799891² = 3579417096719223762, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1337799811) 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 7 ways as a sum of consecutive naturals, for example, 43240 + ... + 67418.

It is an arithmetic number, because the mean of its divisors is an integer number (222987960).

Almost surely, 2^1337799891 is an apocalyptic number.

1337799891 is a deficient number, since it is larger than the sum of its proper divisors (446103789).

1337799891 is a wasteful number, since it uses less digits than its factorization.

1337799891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42625.

The product of its digits is 2571912, while the sum is 57.

The square root of 1337799891 is about 36575.9468913656. The cubic root of 1337799891 is about 1101.8700671793.

The spelling of 1337799891 in words is "one billion, three hundred thirty-seven million, seven hundred ninety-nine thousand, eight hundred ninety-one".