3817520081 has 8 divisors (see below), whose sum is σ = 3868561920. Its totient is φ = 3766546368.

The previous prime is 3817520053. The next prime is 3817520089. The reversal of 3817520081 is 1800257183.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3817520081 is a prime.

It is a super-2 number, since 2×3817520081² = 29146919137676493122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3817520089) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101225 + ... + 133721.

It is an arithmetic number, because the mean of its divisors is an integer number (483570240).

Almost surely, 2^3817520081 is an apocalyptic number.

It is an amenable number.

3817520081 is a deficient number, since it is larger than the sum of its proper divisors (51041839).

3817520081 is a wasteful number, since it uses less digits than its factorization.

3817520081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34063.

The product of its (nonzero) digits is 13440, while the sum is 35.

The square root of 3817520081 is about 61786.0832307729. The cubic root of 3817520081 is about 1562.8853133662.

The spelling of 3817520081 in words is "three billion, eight hundred seventeen million, five hundred twenty thousand, eighty-one".