1912913 has 2 divisors, whose sum is σ = 1912914. Its totient is φ = 1912912.

The previous prime is 1912903. The next prime is 1912919. The reversal of 1912913 is 3192191.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1117249 + 795664 = 1057^2 + 892^2 .

It is a cyclic number.

It is not a de Polignac number, because 1912913 - 2¹² = 1908817 is a prime.

It is a super-2 number, since 2×1912913² = 7318472291138, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1912919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 956456 + 956457.

It is an arithmetic number, because the mean of its divisors is an integer number (956457).

2^1912913 is an apocalyptic number.

It is an amenable number.

1912913 is a deficient number, since it is larger than the sum of its proper divisors (1).

1912913 is an equidigital number, since it uses as much as digits as its factorization.

1912913 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 486, while the sum is 26.

The square root of 1912913 is about 1383.0809809986. The cubic root of 1912913 is about 124.1361883864.

The spelling of 1912913 in words is "one million, nine hundred twelve thousand, nine hundred thirteen".