495644890 has 48 divisors (see below), whose sum is σ = 970188408. Its totient is φ = 182227968.

The previous prime is 495644881. The next prime is 495644921. The reversal of 495644890 is 98446594.

It can be written as a sum of positive squares in 12 ways, for example, as 204976489 + 290668401 = 14317^2 + 17049^2 .

It is a super-2 number, since 2×495644890² = 491327713966224200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 528502 + ... + 529438.

Almost surely, 2^495644890 is an apocalyptic number.

495644890 is a deficient number, since it is larger than the sum of its proper divisors (474543518).

495644890 is a wasteful number, since it uses less digits than its factorization.

495644890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1283 (or 1270 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 49.

The square root of 495644890 is about 22263.0835689938. The cubic root of 495644890 is about 791.3893673069.

The spelling of 495644890 in words is "four hundred ninety-five million, six hundred forty-four thousand, eight hundred ninety".