3635981442 has 12 divisors (see below), whose sum is σ = 7877959830. Its totient is φ = 1211993808.

The previous prime is 3635981423. The next prime is 3635981443. The reversal of 3635981442 is 2441895363.

3635981442 is a `hidden beast` number, since 3 + 6 + 3 + 598 + 14 + 42 = 666.

It can be written as a sum of positive squares in only one way, i.e., 3146200281 + 489781161 = 56091^2 + 22131^2 .

It is a super-2 number, since 2×3635981442² = 26440722093136798728, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3635981443) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 100999467 + ... + 100999502.

Almost surely, 2^3635981442 is an apocalyptic number.

3635981442 is an abundant number, since it is smaller than the sum of its proper divisors (4241978388).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3635981442 is a wasteful number, since it uses less digits than its factorization.

3635981442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201998977 (or 201998974 counting only the distinct ones).

The product of its digits is 622080, while the sum is 45.

The square root of 3635981442 is about 60299.0998440275. The cubic root of 3635981442 is about 1537.7080430753.

The spelling of 3635981442 in words is "three billion, six hundred thirty-five million, nine hundred eighty-one thousand, four hundred forty-two".