1337992891 has 8 divisors (see below), whose sum is σ = 1382252544. Its totient is φ = 1293801960.

The previous prime is 1337992883. The next prime is 1337992907. The reversal of 1337992891 is 1982997331.

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 1337992891 - 2³ = 1337992883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1337992801) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24006 + ... + 57028.

It is an arithmetic number, because the mean of its divisors is an integer number (172781568).

Almost surely, 2^1337992891 is an apocalyptic number.

1337992891 is a deficient number, since it is larger than the sum of its proper divisors (44259653).

1337992891 is a wasteful number, since it uses less digits than its factorization.

1337992891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34361.

The product of its digits is 734832, while the sum is 52.

The square root of 1337992891 is about 36578.5851421293. The cubic root of 1337992891 is about 1101.9230523576.

The spelling of 1337992891 in words is "one billion, three hundred thirty-seven million, nine hundred ninety-two thousand, eight hundred ninety-one".