3781111873 has 16 divisors (see below), whose sum is σ = 4718278656. Its totient is φ = 2943717840.

The previous prime is 3781111847. The next prime is 3781111927.

3781111873 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 3781111873 - 2²⁵ = 3747557441 is a prime.

It is a super-2 number, since 2×3781111873² = 28593613992283136258, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3781111823) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68440 + ... + 110662.

It is an arithmetic number, because the mean of its divisors is an integer number (294892416).

Almost surely, 2^3781111873 is an apocalyptic number.

It is an amenable number.

3781111873 is a deficient number, since it is larger than the sum of its proper divisors (937166783).

3781111873 is a wasteful number, since it uses less digits than its factorization.

3781111873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43404.

The product of its digits is 28224, while the sum is 40.

The square root of 3781111873 is about 61490.7462387634. The cubic root of 3781111873 is about 1557.9009508731.

The spelling of 3781111873 in words is "three billion, seven hundred eighty-one million, one hundred eleven thousand, eight hundred seventy-three".