1373891 has 2 divisors, whose sum is σ = 1373892. Its totient is φ = 1373890.

The previous prime is 1373887. The next prime is 1373959. The reversal of 1373891 is 1983731.

It is a weak prime.

It is an emirp because it is prime and its reverse (1983731) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1373891 - 2² = 1373887 is a prime.

It is not a weakly prime, because it can be changed into another prime (1373851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 686945 + 686946.

It is an arithmetic number, because the mean of its divisors is an integer number (686946).

2^1373891 is an apocalyptic number.

1373891 is a deficient number, since it is larger than the sum of its proper divisors (1).

1373891 is an equidigital number, since it uses as much as digits as its factorization.

1373891 is an evil number, because the sum of its binary digits is even.

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

The square root of 1373891 is about 1172.1309653789. The cubic root of 1373891 is about 111.1691008036.

The spelling of 1373891 in words is "one million, three hundred seventy-three thousand, eight hundred ninety-one".