3681023787 has 48 divisors (see below), whose sum is σ = 6555556800. Its totient is φ = 1942327296.

The previous prime is 3681023771. The next prime is 3681023809. The reversal of 3681023787 is 7873201863.

It is not a de Polignac number, because 3681023787 - 2⁴ = 3681023771 is a prime.

It is a super-2 number, since 2×3681023787² = 27099872240919642738, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3681021787) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 24339 + ... + 89187.

It is an arithmetic number, because the mean of its divisors is an integer number (136574100).

Almost surely, 2^3681023787 is an apocalyptic number.

3681023787 is a deficient number, since it is larger than the sum of its proper divisors (2874533013).

3681023787 is a wasteful number, since it uses less digits than its factorization.

3681023787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64932 (or 64929 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 45.

The square root of 3681023787 is about 60671.4412800619. The cubic root of 3681023787 is about 1544.0316840651.

The spelling of 3681023787 in words is "three billion, six hundred eighty-one million, twenty-three thousand, seven hundred eighty-seven".