3756394388 has 12 divisors (see below), whose sum is σ = 6574178100. Its totient is φ = 1878057792.

The previous prime is 3756394381. The next prime is 3756394391. The reversal of 3756394388 is 8834936573.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 372412804 + 3383981584 = 19298^2 + 58172^2 .

It is a super-2 number, since 2×3756394388² = 28220997596395789088, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3756394381) 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, 47288 + ... + 98736.

It is an arithmetic number, because the mean of its divisors is an integer number (547848175).

Almost surely, 2^3756394388 is an apocalyptic number.

It is an amenable number.

3756394388 is a deficient number, since it is larger than the sum of its proper divisors (2817783712).

3756394388 is a wasteful number, since it uses less digits than its factorization.

3756394388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69706 (or 69704 counting only the distinct ones).

The product of its digits is 13063680, while the sum is 56.

The square root of 3756394388 is about 61289.4312912104. The cubic root of 3756394388 is about 1554.4988115404.

The spelling of 3756394388 in words is "three billion, seven hundred fifty-six million, three hundred ninety-four thousand, three hundred eighty-eight".