190940470397 has 2 divisors, whose sum is σ = 190940470398. Its totient is φ = 190940470396.

The previous prime is 190940470367. The next prime is 190940470439. The reversal of 190940470397 is 793074049091.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 99357974521 + 91582495876 = 315211^2 + 302626^2 .

It is a cyclic number.

It is not a de Polignac number, because 190940470397 - 2⁶ = 190940470333 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (190940470367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95470235198 + 95470235199.

It is an arithmetic number, because the mean of its divisors is an integer number (95470235199).

Almost surely, 2^190940470397 is an apocalyptic number.

It is an amenable number.

190940470397 is a deficient number, since it is larger than the sum of its proper divisors (1).

190940470397 is an equidigital number, since it uses as much as digits as its factorization.

190940470397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1714608, while the sum is 53.

The spelling of 190940470397 in words is "one hundred ninety billion, nine hundred forty million, four hundred seventy thousand, three hundred ninety-seven".