1913407 has 2 divisors, whose sum is σ = 1913408. Its totient is φ = 1913406.

The previous prime is 1913389. The next prime is 1913419. The reversal of 1913407 is 7043191.

It is a strong prime.

It is an emirp because it is prime and its reverse (7043191) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1913407 is a prime.

It is a super-2 number, since 2×1913407² = 7322252695298, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1913437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 956703 + 956704.

It is an arithmetic number, because the mean of its divisors is an integer number (956704).

2^1913407 is an apocalyptic number.

1913407 is a deficient number, since it is larger than the sum of its proper divisors (1).

1913407 is an equidigital number, since it uses as much as digits as its factorization.

1913407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 756, while the sum is 25.

The square root of 1913407 is about 1383.2595562656. The cubic root of 1913407 is about 124.1468733119.

Adding to 1913407 its reverse (7043191), we get a palindrome (8956598).

The spelling of 1913407 in words is "one million, nine hundred thirteen thousand, four hundred seven".