3963601634 has 4 divisors (see below), whose sum is σ = 5945402454. Its totient is φ = 1981800816.

The previous prime is 3963601619. The next prime is 3963601687. The reversal of 3963601634 is 4361063693.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2766234025 + 1197367609 = 52595^2 + 34603^2 .

It is a junction number, because it is equal to n+sod(n) for n = 3963601591 and 3963601600.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 990900407 + ... + 990900410.

Almost surely, 2^3963601634 is an apocalyptic number.

3963601634 is a deficient number, since it is larger than the sum of its proper divisors (1981800820).

3963601634 is a wasteful number, since it uses less digits than its factorization.

3963601634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1981800819.

The product of its (nonzero) digits is 209952, while the sum is 41.

The square root of 3963601634 is about 62957.1412470420. The cubic root of 3963601634 is about 1582.5714727712.

The spelling of 3963601634 in words is "three billion, nine hundred sixty-three million, six hundred one thousand, six hundred thirty-four".