3726754921 has 2 divisors, whose sum is σ = 3726754922. Its totient is φ = 3726754920.

The previous prime is 3726754919. The next prime is 3726754937. The reversal of 3726754921 is 1294576273.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3646831321 + 79923600 = 60389^2 + 8940^2 .

It is a cyclic number.

It is not a de Polignac number, because 3726754921 - 2¹ = 3726754919 is a prime.

Together with 3726754919, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (3726754951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1863377460 + 1863377461.

It is an arithmetic number, because the mean of its divisors is an integer number (1863377461).

Almost surely, 2^3726754921 is an apocalyptic number.

It is an amenable number.

3726754921 is a deficient number, since it is larger than the sum of its proper divisors (1).

3726754921 is an equidigital number, since it uses as much as digits as its factorization.

3726754921 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 635040, while the sum is 46.

The square root of 3726754921 is about 61047.1532587720. The cubic root of 3726754921 is about 1550.3994698449.

The spelling of 3726754921 in words is "three billion, seven hundred twenty-six million, seven hundred fifty-four thousand, nine hundred twenty-one".