2549138160 has 80 divisors (see below), whose sum is σ = 7921412640. Its totient is φ = 678128640.

The previous prime is 2549138149. The next prime is 2549138167. The reversal of 2549138160 is 618319452.

2549138160 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2549138167) 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, 88426 + ... + 113654.

It is an arithmetic number, because the mean of its divisors is an integer number (99017658).

Almost surely, 2^2549138160 is an apocalyptic number.

2549138160 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 2549138160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3960706320).

2549138160 is an abundant number, since it is smaller than the sum of its proper divisors (5372274480).

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

2549138160 is a wasteful number, since it uses less digits than its factorization.

2549138160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25666 (or 25660 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 39.

The square root of 2549138160 is about 50488.9904830746. The cubic root of 2549138160 is about 1366.0432765340.

The spelling of 2549138160 in words is "two billion, five hundred forty-nine million, one hundred thirty-eight thousand, one hundred sixty".