3651220422 has 48 divisors (see below), whose sum is σ = 8482002480. Its totient is φ = 1164148128.

The previous prime is 3651220357. The next prime is 3651220483. The reversal of 3651220422 is 2240221563.

It is a happy number.

3651220422 is a `hidden beast` number, since 3 + 651 + 2 + 2 + 0 + 4 + 2 + 2 = 666.

3651220422 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 35343 + ... + 92474.

It is an arithmetic number, because the mean of its divisors is an integer number (176708385).

Almost surely, 2^3651220422 is an apocalyptic number.

3651220422 is an abundant number, since it is smaller than the sum of its proper divisors (4830782058).

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

3651220422 is a wasteful number, since it uses less digits than its factorization.

3651220422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127874 (or 127845 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 3651220422 is about 60425.3293081635. The cubic root of 3651220422 is about 1539.8533089600.

Adding to 3651220422 its reverse (2240221563), we get a palindrome (5891441985).

The spelling of 3651220422 in words is "three billion, six hundred fifty-one million, two hundred twenty thousand, four hundred twenty-two".