3745349681 has 8 divisors (see below), whose sum is σ = 3876439680. Its totient is φ = 3614389072.

The previous prime is 3745349659. The next prime is 3745349683. The reversal of 3745349681 is 1869435473.

3745349681 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3745349681 - 2⁶ = 3745349617 is a prime.

It is a super-2 number, since 2×3745349681² = 28055288465933603522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3745349683) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28526 + ... + 91128.

It is an arithmetic number, because the mean of its divisors is an integer number (484554960).

Almost surely, 2^3745349681 is an apocalyptic number.

It is an amenable number.

3745349681 is a deficient number, since it is larger than the sum of its proper divisors (131089999).

3745349681 is a wasteful number, since it uses less digits than its factorization.

3745349681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64695.

The product of its digits is 2177280, while the sum is 50.

The square root of 3745349681 is about 61199.2620952246. The cubic root of 3745349681 is about 1552.9737818926.

The spelling of 3745349681 in words is "three billion, seven hundred forty-five million, three hundred forty-nine thousand, six hundred eighty-one".