1337891 has 2 divisors, whose sum is σ = 1337892. Its totient is φ = 1337890.

The previous prime is 1337873. The next prime is 1337899. The reversal of 1337891 is 1987331.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1337891 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1337899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 668945 + 668946.

It is an arithmetic number, because the mean of its divisors is an integer number (668946).

2^1337891 is an apocalyptic number.

1337891 is a deficient number, since it is larger than the sum of its proper divisors (1).

1337891 is an equidigital number, since it uses as much as digits as its factorization.

1337891 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4536, while the sum is 32.

The square root of 1337891 is about 1156.6723823106. The cubic root of 1337891 is about 110.1895080387.

The spelling of 1337891 in words is "one million, three hundred thirty-seven thousand, eight hundred ninety-one".