2990621844 has 192 divisors, whose sum is σ = 9583902720. Its totient is φ = 786931200.

The previous prime is 2990621819. The next prime is 2990621873. The reversal of 2990621844 is 4481260992.

It is a self number, because there is not a number n which added to its sum of digits gives 2990621844.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 601569 + ... + 606519.

It is an arithmetic number, because the mean of its divisors is an integer number (49916160).

Almost surely, 2^2990621844 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2990621844, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4791951360).

2990621844 is an abundant number, since it is smaller than the sum of its proper divisors (6593280876).

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

2990621844 is a wasteful number, since it uses less digits than its factorization.

2990621844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5035 (or 5027 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The square root of 2990621844 is about 54686.5782802325. The cubic root of 2990621844 is about 1440.7451525361.

The spelling of 2990621844 in words is "two billion, nine hundred ninety million, six hundred twenty-one thousand, eight hundred forty-four".