194372192387 has 2 divisors, whose sum is σ = 194372192388. Its totient is φ = 194372192386.

The previous prime is 194372192327. The next prime is 194372192393. The reversal of 194372192387 is 783291273491.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (783291273491) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 194372192387 - 2⁶ = 194372192323 is a prime.

It is not a weakly prime, because it can be changed into another prime (194372192317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97186096193 + 97186096194.

It is an arithmetic number, because the mean of its divisors is an integer number (97186096194).

Almost surely, 2^194372192387 is an apocalyptic number.

194372192387 is a deficient number, since it is larger than the sum of its proper divisors (1).

194372192387 is an equidigital number, since it uses as much as digits as its factorization.

194372192387 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4572288, while the sum is 56.

The spelling of 194372192387 in words is "one hundred ninety-four billion, three hundred seventy-two million, one hundred ninety-two thousand, three hundred eighty-seven".