3865862490 has 64 divisors (see below), whose sum is σ = 10890111744. Its totient is φ = 859742208.

The previous prime is 3865862479. The next prime is 3865862491. The reversal of 3865862490 is 942685683.

3865862490 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (3865862491) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 240999 + ... + 256538.

It is an arithmetic number, because the mean of its divisors is an integer number (170157996).

Almost surely, 2^3865862490 is an apocalyptic number.

3865862490 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

3865862490 is an abundant number, since it is smaller than the sum of its proper divisors (7024249254).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3865862490 is a wasteful number, since it uses less digits than its factorization.

3865862490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 497591.

The product of its (nonzero) digits is 2488320, while the sum is 51.

The square root of 3865862490 is about 62176.0604252151. The cubic root of 3865862490 is about 1569.4547567752.

The spelling of 3865862490 in words is "three billion, eight hundred sixty-five million, eight hundred sixty-two thousand, four hundred ninety".