3703864621 has 2 divisors, whose sum is σ = 3703864622. Its totient is φ = 3703864620.

The previous prime is 3703864607. The next prime is 3703864649. The reversal of 3703864621 is 1264683073.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1974469225 + 1729395396 = 44435^2 + 41586^2 .

It is a cyclic number.

It is not a de Polignac number, because 3703864621 - 2²¹ = 3701767469 is a prime.

It is a super-2 number, since 2×3703864621² = 27437226261390947282, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3703862621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1851932310 + 1851932311.

It is an arithmetic number, because the mean of its divisors is an integer number (1851932311).

Almost surely, 2^3703864621 is an apocalyptic number.

It is an amenable number.

3703864621 is a deficient number, since it is larger than the sum of its proper divisors (1).

3703864621 is an equidigital number, since it uses as much as digits as its factorization.

3703864621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 145152, while the sum is 40.

The square root of 3703864621 is about 60859.3840011547. The cubic root of 3703864621 is about 1547.2186849042.

The spelling of 3703864621 in words is "three billion, seven hundred three million, eight hundred sixty-four thousand, six hundred twenty-one".