2861955480 has 256 divisors, whose sum is σ = 9237888000. Its totient is φ = 708012032.

The previous prime is 2861955449. The next prime is 2861955517. The reversal of 2861955480 is 845591682.

It is a congruent number.

It is an unprimeable number.

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, 10881829 + ... + 10882091.

It is an arithmetic number, because the mean of its divisors is an integer number (36085500).

Almost surely, 2^2861955480 is an apocalyptic number.

2861955480 is a gapful number since it is divisible by the number (20) 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 2861955480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4618944000).

2861955480 is an abundant number, since it is smaller than the sum of its proper divisors (6375932520).

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

2861955480 is a wasteful number, since it uses less digits than its factorization.

2861955480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 418 (or 414 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 48.

The square root of 2861955480 is about 53497.2474058245. The cubic root of 2861955480 is about 1419.7796854521.

The spelling of 2861955480 in words is "two billion, eight hundred sixty-one million, nine hundred fifty-five thousand, four hundred eighty".