245744376919 has 2 divisors, whose sum is σ = 245744376920. Its totient is φ = 245744376918.

The previous prime is 245744376901. The next prime is 245744376953. The reversal of 245744376919 is 919673447542.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 245744376919 - 2¹⁵ = 245744344151 is a prime.

It is a super-2 number, since 2×245744376919² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (245744370919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122872188459 + 122872188460.

It is an arithmetic number, because the mean of its divisors is an integer number (122872188460).

Almost surely, 2^245744376919 is an apocalyptic number.

245744376919 is a deficient number, since it is larger than the sum of its proper divisors (1).

245744376919 is an equidigital number, since it uses as much as digits as its factorization.

245744376919 is an evil number, because the sum of its binary digits is even.

The product of its digits is 45722880, while the sum is 61.

The spelling of 245744376919 in words is "two hundred forty-five billion, seven hundred forty-four million, three hundred seventy-six thousand, nine hundred nineteen".