3881786134 has 4 divisors (see below), whose sum is σ = 5822679204. Its totient is φ = 1940893066.

The previous prime is 3881786131. The next prime is 3881786147. The reversal of 3881786134 is 4316871883.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×3881786134² = 30136527180229331912, which contains 22 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3881786131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 970446532 + ... + 970446535.

It is an arithmetic number, because the mean of its divisors is an integer number (1455669801).

Almost surely, 2^3881786134 is an apocalyptic number.

3881786134 is a deficient number, since it is larger than the sum of its proper divisors (1940893070).

3881786134 is a wasteful number, since it uses less digits than its factorization.

3881786134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1940893069.

The product of its digits is 774144, while the sum is 49.

The square root of 3881786134 is about 62303.9816865664. The cubic root of 3881786134 is about 1571.6066873909.

The spelling of 3881786134 in words is "three billion, eight hundred eighty-one million, seven hundred eighty-six thousand, one hundred thirty-four".