190270930397 has 2 divisors, whose sum is σ = 190270930398. Its totient is φ = 190270930396.

The previous prime is 190270930393. The next prime is 190270930417. The reversal of 190270930397 is 793039072091.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 171318176836 + 18952753561 = 413906^2 + 137669^2 .

It is a cyclic number.

It is not a de Polignac number, because 190270930397 - 2² = 190270930393 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (190270930393) 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, 95135465198 + 95135465199.

It is an arithmetic number, because the mean of its divisors is an integer number (95135465199).

Almost surely, 2^190270930397 is an apocalyptic number.

It is an amenable number.

190270930397 is a deficient number, since it is larger than the sum of its proper divisors (1).

190270930397 is an equidigital number, since it uses as much as digits as its factorization.

190270930397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 642978, while the sum is 50.

The spelling of 190270930397 in words is "one hundred ninety billion, two hundred seventy million, nine hundred thirty thousand, three hundred ninety-seven".