3754726721 has 4 divisors (see below), whose sum is σ = 3764957952. Its totient is φ = 3744495492.

The previous prime is 3754726697. The next prime is 3754726757. The reversal of 3754726721 is 1276274573.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3754726721 - 2¹⁸ = 3754464577 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3754726421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5115065 + ... + 5115798.

It is an arithmetic number, because the mean of its divisors is an integer number (941239488).

Almost surely, 2^3754726721 is an apocalyptic number.

It is an amenable number.

3754726721 is a deficient number, since it is larger than the sum of its proper divisors (10231231).

3754726721 is a wasteful number, since it uses less digits than its factorization.

3754726721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10231230.

The product of its digits is 493920, while the sum is 44.

The square root of 3754726721 is about 61275.8249312076. The cubic root of 3754726721 is about 1554.2687354062.

The spelling of 3754726721 in words is "three billion, seven hundred fifty-four million, seven hundred twenty-six thousand, seven hundred twenty-one".