1373819 has 2 divisors, whose sum is σ = 1373820. Its totient is φ = 1373818.

The previous prime is 1373803. The next prime is 1373839. The reversal of 1373819 is 9183731.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1373819 - 2⁴ = 1373803 is a prime.

It is a super-2 number, since 2×1373819² = 3774757289522, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1373839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 686909 + 686910.

It is an arithmetic number, because the mean of its divisors is an integer number (686910).

2^1373819 is an apocalyptic number.

1373819 is a deficient number, since it is larger than the sum of its proper divisors (1).

1373819 is an equidigital number, since it uses as much as digits as its factorization.

1373819 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 1373819 is about 1172.1002516850. The cubic root of 1373819 is about 111.1671587972.

The spelling of 1373819 in words is "one million, three hundred seventy-three thousand, eight hundred nineteen".