3721749457 has 8 divisors (see below), whose sum is σ = 3813852672. Its totient is φ = 3629709600.

The previous prime is 3721749419. The next prime is 3721749467. The reversal of 3721749457 is 7549471273.

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 3721749457 - 2¹¹ = 3721747409 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3721749457.

It is not an unprimeable number, because it can be changed into a prime (3721749467) 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 7 ways as a sum of consecutive naturals, for example, 116608 + ... + 145054.

It is an arithmetic number, because the mean of its divisors is an integer number (476731584).

Almost surely, 2^3721749457 is an apocalyptic number.

It is an amenable number.

3721749457 is a deficient number, since it is larger than the sum of its proper divisors (92103215).

3721749457 is a wasteful number, since it uses less digits than its factorization.

3721749457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31679.

The product of its digits is 1481760, while the sum is 49.

The square root of 3721749457 is about 61006.1427808708. The cubic root of 3721749457 is about 1549.7050367617.

The spelling of 3721749457 in words is "three billion, seven hundred twenty-one million, seven hundred forty-nine thousand, four hundred fifty-seven".