11945372819 has 2 divisors, whose sum is σ = 11945372820. Its totient is φ = 11945372818.

The previous prime is 11945372797. The next prime is 11945372863. The reversal of 11945372819 is 91827354911.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11945372819 - 2⁸ = 11945372563 is a prime.

It is a super-2 number, since 2×11945372819² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11945372869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5972686409 + 5972686410.

It is an arithmetic number, because the mean of its divisors is an integer number (5972686410).

Almost surely, 2^11945372819 is an apocalyptic number.

11945372819 is a deficient number, since it is larger than the sum of its proper divisors (1).

11945372819 is an equidigital number, since it uses as much as digits as its factorization.

11945372819 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 544320, while the sum is 50.

The spelling of 11945372819 in words is "eleven billion, nine hundred forty-five million, three hundred seventy-two thousand, eight hundred nineteen".