3721329401 has 2 divisors, whose sum is σ = 3721329402. Its totient is φ = 3721329400.

The previous prime is 3721329389. The next prime is 3721329431. The reversal of 3721329401 is 1049231273.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2292111376 + 1429218025 = 47876^2 + 37805^2 .

It is a cyclic number.

It is not a de Polignac number, because 3721329401 - 2¹⁸ = 3721067257 is a prime.

It is not a weakly prime, because it can be changed into another prime (3721329431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1860664700 + 1860664701.

It is an arithmetic number, because the mean of its divisors is an integer number (1860664701).

Almost surely, 2^3721329401 is an apocalyptic number.

It is an amenable number.

3721329401 is a deficient number, since it is larger than the sum of its proper divisors (1).

3721329401 is an equidigital number, since it uses as much as digits as its factorization.

3721329401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 3721329401 is about 61002.6999484449. The cubic root of 3721329401 is about 1549.6467319781.

The spelling of 3721329401 in words is "three billion, seven hundred twenty-one million, three hundred twenty-nine thousand, four hundred one".