3923781634 has 8 divisors (see below), whose sum is σ = 5898277008. Its totient is φ = 1957689300.

The previous prime is 3923781619. The next prime is 3923781643. The reversal of 3923781634 is 4361873293.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×3923781634² = 30792124622631419912, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2099592 + ... + 2101459.

It is an arithmetic number, because the mean of its divisors is an integer number (737284626).

Almost surely, 2^3923781634 is an apocalyptic number.

3923781634 is a deficient number, since it is larger than the sum of its proper divisors (1974495374).

3923781634 is a wasteful number, since it uses less digits than its factorization.

3923781634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4201520.

The product of its digits is 653184, while the sum is 46.

The square root of 3923781634 is about 62640.0960567590. The cubic root of 3923781634 is about 1577.2539002920.

The spelling of 3923781634 in words is "three billion, nine hundred twenty-three million, seven hundred eighty-one thousand, six hundred thirty-four".