495161778 has 8 divisors (see below), whose sum is σ = 990323568. Its totient is φ = 165053924.

The previous prime is 495161773. The next prime is 495161783. The reversal of 495161778 is 877161594.

It is an interprime number because it is at equal distance from previous prime (495161773) and next prime (495161783).

It is a sphenic number, since it is the product of 3 distinct primes.

495161778 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (495161773) 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, 41263476 + ... + 41263487.

It is an arithmetic number, because the mean of its divisors is an integer number (123790446).

Almost surely, 2^495161778 is an apocalyptic number.

495161778 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

495161778 is a wasteful number, since it uses less digits than its factorization.

495161778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82526968.

The product of its digits is 423360, while the sum is 48.

The square root of 495161778 is about 22252.2308544559. The cubic root of 495161778 is about 791.1321576286.

The spelling of 495161778 in words is "four hundred ninety-five million, one hundred sixty-one thousand, seven hundred seventy-eight".