3750815481 has 32 divisors (see below), whose sum is σ = 5878118400. Its totient is φ = 2082858624.

The previous prime is 3750815473. The next prime is 3750815489. The reversal of 3750815481 is 1845180573.

It is an interprime number because it is at equal distance from previous prime (3750815473) and next prime (3750815489).

It is not a de Polignac number, because 3750815481 - 2³ = 3750815473 is a prime.

It is a super-2 number, since 2×3750815481² = 28137233545018522722, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3750815489) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 169261 + ... + 190133.

It is an arithmetic number, because the mean of its divisors is an integer number (183691200).

Almost surely, 2^3750815481 is an apocalyptic number.

It is an amenable number.

3750815481 is a deficient number, since it is larger than the sum of its proper divisors (2127302919).

3750815481 is a wasteful number, since it uses less digits than its factorization.

3750815481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21125.

The product of its (nonzero) digits is 134400, while the sum is 42.

The square root of 3750815481 is about 61243.9015821167. The cubic root of 3750815481 is about 1553.7288621067.

The spelling of 3750815481 in words is "three billion, seven hundred fifty million, eight hundred fifteen thousand, four hundred eighty-one".