1914979397399 has 2 divisors, whose sum is σ = 1914979397400. Its totient is φ = 1914979397398.

The previous prime is 1914979397381. The next prime is 1914979397431. The reversal of 1914979397399 is 9937939794191.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1914979397399 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1914979397899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 957489698699 + 957489698700.

It is an arithmetic number, because the mean of its divisors is an integer number (957489698700).

Almost surely, 2^{1914979397399} is an apocalyptic number.

1914979397399 is a deficient number, since it is larger than the sum of its proper divisors (1).

1914979397399 is an equidigital number, since it uses as much as digits as its factorization.

1914979397399 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 937461924, while the sum is 80.

The spelling of 1914979397399 in words is "one trillion, nine hundred fourteen billion, nine hundred seventy-nine million, three hundred ninety-seven thousand, three hundred ninety-nine".