3651421537 has 8 divisors (see below), whose sum is σ = 3709692000. Its totient is φ = 3593572224.

The previous prime is 3651421531. The next prime is 3651421547. The reversal of 3651421537 is 7351241563.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3651421537 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3651421496 and 3651421505.

It is not an unprimeable number, because it can be changed into a prime (3651421531) 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, 87787 + ... + 122512.

It is an arithmetic number, because the mean of its divisors is an integer number (463711500).

Almost surely, 2^3651421537 is an apocalyptic number.

It is an amenable number.

3651421537 is a deficient number, since it is larger than the sum of its proper divisors (58270463).

3651421537 is a wasteful number, since it uses less digits than its factorization.

3651421537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210575.

The product of its digits is 75600, while the sum is 37.

The square root of 3651421537 is about 60426.9934466377. The cubic root of 3651421537 is about 1539.8815809601.

The spelling of 3651421537 in words is "three billion, six hundred fifty-one million, four hundred twenty-one thousand, five hundred thirty-seven".