3861918316 has 12 divisors (see below), whose sum is σ = 7052198832. Its totient is φ = 1847004368.

The previous prime is 3861918311. The next prime is 3861918317. The reversal of 3861918316 is 6138191683.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is not an unprimeable number, because it can be changed into a prime (3861918311) 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, 20988595 + ... + 20988778.

It is an arithmetic number, because the mean of its divisors is an integer number (587683236).

Almost surely, 2^3861918316 is an apocalyptic number.

It is an amenable number.

3861918316 is a deficient number, since it is larger than the sum of its proper divisors (3190280516).

3861918316 is a wasteful number, since it uses less digits than its factorization.

3861918316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41977400 (or 41977398 counting only the distinct ones).

The product of its digits is 186624, while the sum is 46.

The square root of 3861918316 is about 62144.3345446711. The cubic root of 3861918316 is about 1568.9208259852.

The spelling of 3861918316 in words is "three billion, eight hundred sixty-one million, nine hundred eighteen thousand, three hundred sixteen".