3881390426 has 8 divisors (see below), whose sum is σ = 5854252404. Its totient is φ = 1929972960.

The previous prime is 3881390417. The next prime is 3881390431. The reversal of 3881390426 is 6240931883.

It can be written as a sum of positive squares in 2 ways, for example, as 3776225401 + 105165025 = 61451^2 + 10255^2 .

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

It is a super-2 number, since 2×3881390426² = 30130383278088922952, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5360675 + ... + 5361398.

Almost surely, 2^3881390426 is an apocalyptic number.

3881390426 is a deficient number, since it is larger than the sum of its proper divisors (1972861978).

3881390426 is a wasteful number, since it uses less digits than its factorization.

3881390426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10722256.

The product of its (nonzero) digits is 248832, while the sum is 44.

The square root of 3881390426 is about 62300.8059819454. The cubic root of 3881390426 is about 1571.5532825535.

The spelling of 3881390426 in words is "three billion, eight hundred eighty-one million, three hundred ninety thousand, four hundred twenty-six".