190461562309 has 2 divisors, whose sum is σ = 190461562310. Its totient is φ = 190461562308.

The previous prime is 190461562279. The next prime is 190461562327. The reversal of 190461562309 is 903265164091.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 160436297025 + 30025265284 = 400545^2 + 173278^2 .

It is an emirp because it is prime and its reverse (903265164091) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 190461562309 - 2¹³ = 190461554117 is a prime.

It is a super-2 number, since 2×190461562309² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (190461562399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95230781154 + 95230781155.

It is an arithmetic number, because the mean of its divisors is an integer number (95230781155).

Almost surely, 2^190461562309 is an apocalyptic number.

It is an amenable number.

190461562309 is a deficient number, since it is larger than the sum of its proper divisors (1).

190461562309 is an equidigital number, since it uses as much as digits as its factorization.

190461562309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 349920, while the sum is 46.

The spelling of 190461562309 in words is "one hundred ninety billion, four hundred sixty-one million, five hundred sixty-two thousand, three hundred nine".