3730679521 has 4 divisors (see below), whose sum is σ = 3767617044. Its totient is φ = 3693742000.

The previous prime is 3730679471. The next prime is 3730679569. The reversal of 3730679521 is 1259760373.

It is a happy number.

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 2609166400 + 1121513121 = 51080^2 + 33489^2 .

It is a cyclic number.

It is not a de Polignac number, because 3730679521 - 2⁹ = 3730679009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3730679021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18468610 + ... + 18468811.

It is an arithmetic number, because the mean of its divisors is an integer number (941904261).

Almost surely, 2^3730679521 is an apocalyptic number.

It is an amenable number.

3730679521 is a deficient number, since it is larger than the sum of its proper divisors (36937523).

3730679521 is a wasteful number, since it uses less digits than its factorization.

3730679521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36937522.

The product of its (nonzero) digits is 238140, while the sum is 43.

The square root of 3730679521 is about 61079.2888056172. The cubic root of 3730679521 is about 1550.9435144834.

The spelling of 3730679521 in words is "three billion, seven hundred thirty million, six hundred seventy-nine thousand, five hundred twenty-one".