3771138842 has 4 divisors (see below), whose sum is σ = 5656708266. Its totient is φ = 1885569420.

The previous prime is 3771138841. The next prime is 3771138869. The reversal of 3771138842 is 2488311773.

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

It can be written as a sum of positive squares in only one way, i.e., 2632818721 + 1138320121 = 51311^2 + 33739^2 .

It is a super-2 number, since 2×3771138842² = 28442976331282201928, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3771138793 and 3771138802.

It is not an unprimeable number, because it can be changed into a prime (3771138841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 942784709 + ... + 942784712.

Almost surely, 2^3771138842 is an apocalyptic number.

3771138842 is a deficient number, since it is larger than the sum of its proper divisors (1885569424).

3771138842 is a wasteful number, since it uses less digits than its factorization.

3771138842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1885569423.

The product of its digits is 225792, while the sum is 44.

The square root of 3771138842 is about 61409.5989402308. The cubic root of 3771138842 is about 1556.5300424264.

The spelling of 3771138842 in words is "three billion, seven hundred seventy-one million, one hundred thirty-eight thousand, eight hundred forty-two".