965649890 has 32 divisors (see below), whose sum is σ = 1759482864. Its totient is φ = 381542400.

The previous prime is 965649889. The next prime is 965649953. The reversal of 965649890 is 98946569.

It can be written as a sum of positive squares in 8 ways, for example, as 878470321 + 87179569 = 29639^2 + 9337^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 581942 + ... + 583598.

Almost surely, 2^965649890 is an apocalyptic number.

965649890 is a deficient number, since it is larger than the sum of its proper divisors (793832974).

965649890 is a wasteful number, since it uses less digits than its factorization.

965649890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2342.

The product of its (nonzero) digits is 4199040, while the sum is 56.

The square root of 965649890 is about 31074.9077231132. The cubic root of 965649890 is about 988.4162993204.

The spelling of 965649890 in words is "nine hundred sixty-five million, six hundred forty-nine thousand, eight hundred ninety".