94372181819 has 2 divisors, whose sum is σ = 94372181820. Its totient is φ = 94372181818.

The previous prime is 94372181801. The next prime is 94372181851. The reversal of 94372181819 is 91818127349.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 94372181819 - 2¹² = 94372177723 is a prime.

It is a super-2 number, since 2×94372181819² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (94372181419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 47186090909 + 47186090910.

It is an arithmetic number, because the mean of its divisors is an integer number (47186090910).

Almost surely, 2^94372181819 is an apocalyptic number.

94372181819 is a deficient number, since it is larger than the sum of its proper divisors (1).

94372181819 is an equidigital number, since it uses as much as digits as its factorization.

94372181819 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 870912, while the sum is 53.

The spelling of 94372181819 in words is "ninety-four billion, three hundred seventy-two million, one hundred eighty-one thousand, eight hundred nineteen".