3721135651 has 2 divisors, whose sum is σ = 3721135652. Its totient is φ = 3721135650.

The previous prime is 3721135643. The next prime is 3721135669. The reversal of 3721135651 is 1565311273.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3721135651 - 2³ = 3721135643 is a prime.

It is not a weakly prime, because it can be changed into another prime (3721135051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1860567825 + 1860567826.

It is an arithmetic number, because the mean of its divisors is an integer number (1860567826).

Almost surely, 2^3721135651 is an apocalyptic number.

3721135651 is a deficient number, since it is larger than the sum of its proper divisors (1).

3721135651 is an equidigital number, since it uses as much as digits as its factorization.

3721135651 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18900, while the sum is 34.

The square root of 3721135651 is about 61001.1118833091. Note that the first 3 decimals coincide. The cubic root of 3721135651 is about 1549.6198375332.

The spelling of 3721135651 in words is "three billion, seven hundred twenty-one million, one hundred thirty-five thousand, six hundred fifty-one".