3651999822 has 12 divisors (see below), whose sum is σ = 7912666320. Its totient is φ = 1217333268.

The previous prime is 3651999787. The next prime is 3651999839. The reversal of 3651999822 is 2289991563.

It is a happy number.

3651999822 is a `hidden beast` number, since 36 + 519 + 9 + 98 + 2 + 2 = 666.

3651999822 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×3651999822³ (a number of 30 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 101444422 + ... + 101444457.

It is an arithmetic number, because the mean of its divisors is an integer number (659388860).

Almost surely, 2^3651999822 is an apocalyptic number.

3651999822 is an abundant number, since it is smaller than the sum of its proper divisors (4260666498).

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

3651999822 is a wasteful number, since it uses less digits than its factorization.

3651999822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202888887 (or 202888884 counting only the distinct ones).

The product of its digits is 2099520, while the sum is 54.

The square root of 3651999822 is about 60431.7782462174. The cubic root of 3651999822 is about 1539.9628683350.

The spelling of 3651999822 in words is "three billion, six hundred fifty-one million, nine hundred ninety-nine thousand, eight hundred twenty-two".