3721629493 has 2 divisors, whose sum is σ = 3721629494. Its totient is φ = 3721629492.

The previous prime is 3721629487. The next prime is 3721629521. The reversal of 3721629493 is 3949261273.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2184440644 + 1537188849 = 46738^2 + 39207^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3721629493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3721629413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1860814746 + 1860814747.

It is an arithmetic number, because the mean of its divisors is an integer number (1860814747).

Almost surely, 2^3721629493 is an apocalyptic number.

It is an amenable number.

3721629493 is a deficient number, since it is larger than the sum of its proper divisors (1).

3721629493 is an equidigital number, since it uses as much as digits as its factorization.

3721629493 is an evil number, because the sum of its binary digits is even.

The product of its digits is 489888, while the sum is 46.

The square root of 3721629493 is about 61005.1595604831. The cubic root of 3721629493 is about 1549.6883859174.

The spelling of 3721629493 in words is "three billion, seven hundred twenty-one million, six hundred twenty-nine thousand, four hundred ninety-three".