3840774861 has 128 divisors (see below), whose sum is σ = 6982225920. Its totient is φ = 1832540160.

The previous prime is 3840774857. The next prime is 3840774869. The reversal of 3840774861 is 1684770483.

It is not a de Polignac number, because 3840774861 - 2² = 3840774857 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3840774861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3840774869) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 28034785 + ... + 28034921.

It is an arithmetic number, because the mean of its divisors is an integer number (54548640).

Almost surely, 2^3840774861 is an apocalyptic number.

It is an amenable number.

3840774861 is a deficient number, since it is larger than the sum of its proper divisors (3141451059).

3840774861 is a wasteful number, since it uses less digits than its factorization.

3840774861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256 (or 234 counting only the distinct ones).

The product of its (nonzero) digits is 903168, while the sum is 48.

The square root of 3840774861 is about 61973.9853567608. The cubic root of 3840774861 is about 1566.0523784898.

The spelling of 3840774861 in words is "three billion, eight hundred forty million, seven hundred seventy-four thousand, eight hundred sixty-one".