3943494642 has 16 divisors (see below), whose sum is σ = 7890837120. Its totient is φ = 1313856912.

The previous prime is 3943494637. The next prime is 3943494649. The reversal of 3943494642 is 2464943493.

It is a super-2 number, since 2×3943494642² = 31102299982965416328, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3943494591 and 3943494600.

It is not an unprimeable number, because it can be changed into a prime (3943494649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 146917 + ... + 171672.

It is an arithmetic number, because the mean of its divisors is an integer number (493177320).

Almost surely, 2^3943494642 is an apocalyptic number.

3943494642 is an abundant number, since it is smaller than the sum of its proper divisors (3947342478).

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

3943494642 is a wasteful number, since it uses less digits than its factorization.

3943494642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320657.

The product of its digits is 2239488, while the sum is 48.

The square root of 3943494642 is about 62797.2502741959. The cubic root of 3943494642 is about 1579.8908542347.

The spelling of 3943494642 in words is "three billion, nine hundred forty-three million, four hundred ninety-four thousand, six hundred forty-two".