3438186381 has 60 divisors (see below), whose sum is σ = 5851714752. Its totient is φ = 1945007568.

The previous prime is 3438186377. The next prime is 3438186383. The reversal of 3438186381 is 1836818343.

3438186381 is a `hidden beast` number, since 3 + 4 + 3 + 8 + 1 + 8 + 638 + 1 = 666.

It is not a de Polignac number, because 3438186381 - 2² = 3438186377 is a prime.

It is a super-2 number, since 2×3438186381² = 23642251180987754322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3438186383) 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 59 ways as a sum of consecutive naturals, for example, 2311420 + ... + 2312906.

Almost surely, 2^3438186381 is an apocalyptic number.

It is an amenable number.

3438186381 is a deficient number, since it is larger than the sum of its proper divisors (2413528371).

3438186381 is a wasteful number, since it uses less digits than its factorization.

3438186381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1628 (or 1604 counting only the distinct ones).

The product of its digits is 331776, while the sum is 45.

The square root of 3438186381 is about 58636.0501824603. The cubic root of 3438186381 is about 1509.3031272645.

The spelling of 3438186381 in words is "three billion, four hundred thirty-eight million, one hundred eighty-six thousand, three hundred eighty-one".