6149669820 has 192 divisors, whose sum is σ = 20563200000. Its totient is φ = 1343462400.

The previous prime is 6149669797. The next prime is 6149669821. The reversal of 6149669820 is 289669416.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6149669821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1227681 + ... + 1232679.

It is an arithmetic number, because the mean of its divisors is an integer number (107100000).

Almost surely, 2^6149669820 is an apocalyptic number.

6149669820 is a gapful number since it is divisible by the number (60) 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 6149669820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10281600000).

6149669820 is an abundant number, since it is smaller than the sum of its proper divisors (14413530180).

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

6149669820 is a wasteful number, since it uses less digits than its factorization.

6149669820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5148 (or 5146 counting only the distinct ones).

The product of its (nonzero) digits is 1119744, while the sum is 51.

The square root of 6149669820 is about 78419.8305277434. The cubic root of 6149669820 is about 1832.1060110244.

The spelling of 6149669820 in words is "six billion, one hundred forty-nine million, six hundred sixty-nine thousand, eight hundred twenty".