190799965 has 4 divisors (see below), whose sum is σ = 228959964. Its totient is φ = 152639968.

The previous prime is 190799963. The next prime is 190799971. The reversal of 190799965 is 569997091.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 90839961 + 99960004 = 9531^2 + 9998^2 .

It is a cyclic number.

It is not a de Polignac number, because 190799965 - 2¹ = 190799963 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (190799963) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19079992 + ... + 19080001.

It is an arithmetic number, because the mean of its divisors is an integer number (57239991).

Almost surely, 2^190799965 is an apocalyptic number.

It is an amenable number.

190799965 is a deficient number, since it is larger than the sum of its proper divisors (38159999).

190799965 is an equidigital number, since it uses as much as digits as its factorization.

190799965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38159998.

The product of its (nonzero) digits is 1377810, while the sum is 55.

The square root of 190799965 is about 13813.0360529465. The cubic root of 190799965 is about 575.6954056435.

The spelling of 190799965 in words is "one hundred ninety million, seven hundred ninety-nine thousand, nine hundred sixty-five".