3621863889 has 180 divisors, whose sum is σ = 7082298432. Its totient is φ = 1803098880.

The previous prime is 3621863873. The next prime is 3621863933. The reversal of 3621863889 is 9883681263.

It is a happy number.

3621863889 is a `hidden beast` number, since 3 + 621 + 8 + 6 + 3 + 8 + 8 + 9 = 666.

3621863889 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3621863889 - 2⁴ = 3621863873 is a prime.

Its product of digits (2985984) is a multiple of the sum of its prime divisors (81).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3621863489) by changing a digit.

It is a polite number, since it can be written in 179 ways as a sum of consecutive naturals, for example, 116834304 + ... + 116834334.

Almost surely, 2^3621863889 is an apocalyptic number.

It is an amenable number.

3621863889 is a deficient number, since it is larger than the sum of its proper divisors (3460434543).

3621863889 is a wasteful number, since it uses less digits than its factorization.

3621863889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138 (or 81 counting only the distinct ones).

The product of its digits is 2985984, while the sum is 54.

The square root of 3621863889 is about 60181.9232743521. The cubic root of 3621863889 is about 1535.7152907056.

The spelling of 3621863889 in words is "three billion, six hundred twenty-one million, eight hundred sixty-three thousand, eight hundred eighty-nine".