3618193920 has 160 divisors (see below), whose sum is σ = 12618745920. Its totient is φ = 877117440.

The previous prime is 3618193907. The next prime is 3618193927. The reversal of 3618193920 is 293918163.

It is a tau number, because it is divible by the number of its divisors (160).

It is not an unprimeable number, because it can be changed into a prime (3618193927) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63066 + ... + 105894.

It is an arithmetic number, because the mean of its divisors is an integer number (78867162).

Almost surely, 2^3618193920 is an apocalyptic number.

3618193920 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3618193920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6309372960).

3618193920 is an abundant number, since it is smaller than the sum of its proper divisors (9000552000).

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

3618193920 is a wasteful number, since it uses less digits than its factorization.

3618193920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42866 (or 42850 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 42.

The square root of 3618193920 is about 60151.4249207781. The cubic root of 3618193920 is about 1535.1964112572.

The spelling of 3618193920 in words is "three billion, six hundred eighteen million, one hundred ninety-three thousand, nine hundred twenty".