64194030919 has 2 divisors, whose sum is σ = 64194030920. Its totient is φ = 64194030918.

The previous prime is 64194030889. The next prime is 64194030937. The reversal of 64194030919 is 91903049146.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 64194030919 - 2³¹ = 62046547271 is a prime.

It is a super-2 number, since 2×64194030919² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64194036919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32097015459 + 32097015460.

It is an arithmetic number, because the mean of its divisors is an integer number (32097015460).

Almost surely, 2^64194030919 is an apocalyptic number.

64194030919 is a deficient number, since it is larger than the sum of its proper divisors (1).

64194030919 is an equidigital number, since it uses as much as digits as its factorization.

64194030919 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 209952, while the sum is 46.

The spelling of 64194030919 in words is "sixty-four billion, one hundred ninety-four million, thirty thousand, nine hundred nineteen".