3986181434 has 4 divisors (see below), whose sum is σ = 5979272154. Its totient is φ = 1993090716.

The previous prime is 3986181431. The next prime is 3986181461. The reversal of 3986181434 is 4341816893.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4341816893 = 41 ⋅105897973.

It can be written as a sum of positive squares in only one way, i.e., 3666665809 + 319515625 = 60553^2 + 17875^2 .

It is not an unprimeable number, because it can be changed into a prime (3986181431) by changing a digit.

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 as a sum of consecutive naturals, namely, 996545357 + ... + 996545360.

Almost surely, 2^3986181434 is an apocalyptic number.

3986181434 is a deficient number, since it is larger than the sum of its proper divisors (1993090720).

3986181434 is a wasteful number, since it uses less digits than its factorization.

3986181434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1993090719.

The product of its digits is 497664, while the sum is 47.

The square root of 3986181434 is about 63136.2133327617. The cubic root of 3986181434 is about 1585.5709757447.

The spelling of 3986181434 in words is "three billion, nine hundred eighty-six million, one hundred eighty-one thousand, four hundred thirty-four".