3875023781 has 4 divisors (see below), whose sum is σ = 3876970092. Its totient is φ = 3873077472.

The previous prime is 3875023753. The next prime is 3875023783. The reversal of 3875023781 is 1873205783.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2384368900 + 1490654881 = 48830^2 + 38609^2 .

It is a cyclic number.

It is not a de Polignac number, because 3875023781 - 2¹⁰ = 3875022757 is a prime.

It is a super-2 number, since 2×3875023781² = 30031618606631071922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3875023783) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 970166 + ... + 974151.

It is an arithmetic number, because the mean of its divisors is an integer number (969242523).

Almost surely, 2^3875023781 is an apocalyptic number.

It is an amenable number.

3875023781 is a deficient number, since it is larger than the sum of its proper divisors (1946311).

3875023781 is a wasteful number, since it uses less digits than its factorization.

3875023781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1946310.

The product of its (nonzero) digits is 282240, while the sum is 44.

The square root of 3875023781 is about 62249.6890032392. The cubic root of 3875023781 is about 1570.6935393149.

The spelling of 3875023781 in words is "three billion, eight hundred seventy-five million, twenty-three thousand, seven hundred eighty-one".