3885115897 has 4 divisors (see below), whose sum is σ = 4183970980. Its totient is φ = 3586260816.

The previous prime is 3885115849. The next prime is 3885115903. The reversal of 3885115897 is 7985115883.

It is a happy number.

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 197711721 + 3687404176 = 14061^2 + 60724^2 .

It is a cyclic number.

It is not a de Polignac number, because 3885115897 - 2⁷ = 3885115769 is a prime.

It is a super-2 number, since 2×3885115897² = 30188251066244229218, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3885115837) 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, 149427522 + ... + 149427547.

It is an arithmetic number, because the mean of its divisors is an integer number (1045992745).

Almost surely, 2^3885115897 is an apocalyptic number.

It is an amenable number.

3885115897 is a deficient number, since it is larger than the sum of its proper divisors (298855083).

3885115897 is a wasteful number, since it uses less digits than its factorization.

3885115897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298855082.

The product of its digits is 2419200, while the sum is 55.

The square root of 3885115897 is about 62330.6978703111. The cubic root of 3885115897 is about 1572.0559292290.

The spelling of 3885115897 in words is "three billion, eight hundred eighty-five million, one hundred fifteen thousand, eight hundred ninety-seven".