3861672387 has 16 divisors (see below), whose sum is σ = 5323115520. Its totient is φ = 2487592800.

The previous prime is 3861672341. The next prime is 3861672389. The reversal of 3861672387 is 7832761683.

3861672387 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3861672387 - 2²⁸ = 3593236931 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3861672389) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30064 + ... + 92882.

It is an arithmetic number, because the mean of its divisors is an integer number (332694720).

Almost surely, 2^3861672387 is an apocalyptic number.

3861672387 is a deficient number, since it is larger than the sum of its proper divisors (1461443133).

3861672387 is a wasteful number, since it uses less digits than its factorization.

3861672387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63514.

The product of its digits is 2032128, while the sum is 51.

The square root of 3861672387 is about 62142.3558211306. The cubic root of 3861672387 is about 1568.8875220424.

The spelling of 3861672387 in words is "three billion, eight hundred sixty-one million, six hundred seventy-two thousand, three hundred eighty-seven".