94742686809 has 81 divisors (see below), whose sum is σ = 146182348767. Its totient is φ = 59127725088.

The previous prime is 94742686777. The next prime is 94742686813. The reversal of 94742686809 is 90868624749.

The square root of 94742686809 is 307803.

It is a perfect power (a square), and thus also a powerful number.

94742686809 is a `hidden beast` number, since 9 + 474 + 2 + 6 + 86 + 80 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 84777057225 + 9965629584 = 291165^2 + 99828^2 .

It is not a de Polignac number, because 94742686809 - 2⁵ = 94742686777 is a prime.

It is not an unprimeable number, because it can be changed into a prime (94742686849) by changing a digit.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 1605808222 + ... + 1605808280.

Almost surely, 2^94742686809 is an apocalyptic number.

94742686809 is the 307803-rd square number.

94742686809 is the 153902-nd centered octagonal number.

It is an amenable number.

94742686809 is a deficient number, since it is larger than the sum of its proper divisors (51439661958).

94742686809 is an equidigital number, since it uses as much as digits as its factorization.

94742686809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292 (or 146 counting only the distinct ones).

The product of its (nonzero) digits is 41803776, while the sum is 63.

The spelling of 94742686809 in words is "ninety-four billion, seven hundred forty-two million, six hundred eighty-six thousand, eight hundred nine".