2801661492 has 96 divisors (see below), whose sum is σ = 7997875200. Its totient is φ = 745466112.

The previous prime is 2801661479. The next prime is 2801661509. The reversal of 2801661492 is 2941661082.

It is a self number, because there is not a number n which added to its sum of digits gives 2801661492.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 79288 + ... + 109040.

It is an arithmetic number, because the mean of its divisors is an integer number (83311200).

Almost surely, 2^2801661492 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 2801661492, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3998937600).

2801661492 is an abundant number, since it is smaller than the sum of its proper divisors (5196213708).

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

2801661492 is a wasteful number, since it uses less digits than its factorization.

2801661492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29845 (or 29843 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 39.

The square root of 2801661492 is about 52930.7235166874. The cubic root of 2801661492 is about 1409.7384777278.

The spelling of 2801661492 in words is "two billion, eight hundred one million, six hundred sixty-one thousand, four hundred ninety-two".