1900313 has 2 divisors, whose sum is σ = 1900314. Its totient is φ = 1900312.

The previous prime is 1900303. The next prime is 1900337. The reversal of 1900313 is 3130091.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 994009 + 906304 = 997^2 + 952^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1900313 is a prime.

It is a super-2 number, since 2×1900313² = 7222378995938, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1900291 and 1900300.

It is not a weakly prime, because it can be changed into another prime (1900303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 950156 + 950157.

It is an arithmetic number, because the mean of its divisors is an integer number (950157).

2^1900313 is an apocalyptic number.

It is an amenable number.

1900313 is a deficient number, since it is larger than the sum of its proper divisors (1).

1900313 is an equidigital number, since it uses as much as digits as its factorization.

1900313 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 81, while the sum is 17.

The square root of 1900313 is about 1378.5184075666. The cubic root of 1900313 is about 123.8630338178.

The spelling of 1900313 in words is "one million, nine hundred thousand, three hundred thirteen".