3753426721 has 16 divisors (see below), whose sum is σ = 4191989760. Its totient is φ = 3331443280.

The previous prime is 3753426709. The next prime is 3753426727. The reversal of 3753426721 is 1276243573.

It is not a de Polignac number, because 3753426721 - 2¹⁵ = 3753393953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3753426727) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 207960 + ... + 225286.

It is an arithmetic number, because the mean of its divisors is an integer number (261999360).

Almost surely, 2^3753426721 is an apocalyptic number.

It is an amenable number.

3753426721 is a deficient number, since it is larger than the sum of its proper divisors (438563039).

3753426721 is a wasteful number, since it uses less digits than its factorization.

3753426721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17804.

The product of its digits is 211680, while the sum is 40.

The square root of 3753426721 is about 61265.2162405390. The cubic root of 3753426721 is about 1554.0893364120.

The spelling of 3753426721 in words is "three billion, seven hundred fifty-three million, four hundred twenty-six thousand, seven hundred twenty-one".