9040862081 has 4 divisors (see below), whose sum is σ = 9041346564. Its totient is φ = 9040377600.

The previous prime is 9040862009. The next prime is 9040862111. The reversal of 9040862081 is 1802680409.

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 978438400 + 8062423681 = 31280^2 + 89791^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9040862081 is a prime.

It is a super-2 number, since 2×9040862081² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (9040862381) 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, 213080 + ... + 251961.

It is an arithmetic number, because the mean of its divisors is an integer number (2260336641).

Almost surely, 2^9040862081 is an apocalyptic number.

It is an amenable number.

9040862081 is a deficient number, since it is larger than the sum of its proper divisors (484483).

9040862081 is a wasteful number, since it uses less digits than its factorization.

9040862081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 484482.

The product of its (nonzero) digits is 27648, while the sum is 38.

The square root of 9040862081 is about 95083.4479864924. The cubic root of 9040862081 is about 2083.2270912918.

The spelling of 9040862081 in words is "nine billion, forty million, eight hundred sixty-two thousand, eighty-one".