190646306651 has 2 divisors, whose sum is σ = 190646306652. Its totient is φ = 190646306650.

The previous prime is 190646306623. The next prime is 190646306681. The reversal of 190646306651 is 156603646091.

It is a weak prime.

It is an emirp because it is prime and its reverse (156603646091) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 190646306651 - 2¹⁴ = 190646290267 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 190646306596 and 190646306605.

It is not a weakly prime, because it can be changed into another prime (190646306681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95323153325 + 95323153326.

It is an arithmetic number, because the mean of its divisors is an integer number (95323153326).

Almost surely, 2^190646306651 is an apocalyptic number.

190646306651 is a deficient number, since it is larger than the sum of its proper divisors (1).

190646306651 is an equidigital number, since it uses as much as digits as its factorization.

190646306651 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 699840, while the sum is 47.

The spelling of 190646306651 in words is "one hundred ninety billion, six hundred forty-six million, three hundred six thousand, six hundred fifty-one".