1337909081 has 2 divisors, whose sum is σ = 1337909082. Its totient is φ = 1337909080.

The previous prime is 1337909071. The next prime is 1337909101. The reversal of 1337909081 is 1809097331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1273347856 + 64561225 = 35684^2 + 8035^2 .

It is a cyclic number.

It is not a de Polignac number, because 1337909081 - 2²⁶ = 1270800217 is a prime.

It is a super-2 number, since 2×1337909081² = 3580001418044529122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1337909071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 668954540 + 668954541.

It is an arithmetic number, because the mean of its divisors is an integer number (668954541).

Almost surely, 2^1337909081 is an apocalyptic number.

It is an amenable number.

1337909081 is a deficient number, since it is larger than the sum of its proper divisors (1).

1337909081 is an equidigital number, since it uses as much as digits as its factorization.

1337909081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40824, while the sum is 41.

The square root of 1337909081 is about 36577.4395085277. The cubic root of 1337909081 is about 1101.9000442385.

The spelling of 1337909081 in words is "one billion, three hundred thirty-seven million, nine hundred nine thousand, eighty-one".