3861732872 has 8 divisors (see below), whose sum is σ = 7240749150. Its totient is φ = 1930866432.

The previous prime is 3861732839. The next prime is 3861732893. The reversal of 3861732872 is 2782371683.

It can be written as a sum of positive squares in only one way, i.e., 2524660516 + 1337072356 = 50246^2 + 36566^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 241358297 + ... + 241358312.

Almost surely, 2^3861732872 is an apocalyptic number.

It is an amenable number.

3861732872 is a deficient number, since it is larger than the sum of its proper divisors (3379016278).

3861732872 is a wasteful number, since it uses less digits than its factorization.

3861732872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 482716615 (or 482716611 counting only the distinct ones).

The product of its digits is 677376, while the sum is 47.

The square root of 3861732872 is about 62142.8424840705. The cubic root of 3861732872 is about 1568.8957131106.

The spelling of 3861732872 in words is "three billion, eight hundred sixty-one million, seven hundred thirty-two thousand, eight hundred seventy-two".