2549541380 has 96 divisors (see below), whose sum is σ = 5713424640. Its totient is φ = 953971200.

The previous prime is 2549541373. The next prime is 2549541389. The reversal of 2549541380 is 831459452.

It is a super-2 number, since 2×2549541380² = 13000322496664608800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2549541389) 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 31 ways as a sum of consecutive naturals, for example, 3765602 + ... + 3766278.

It is an arithmetic number, because the mean of its divisors is an integer number (59514840).

Almost surely, 2^2549541380 is an apocalyptic number.

2549541380 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 2549541380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2856712320).

2549541380 is an abundant number, since it is smaller than the sum of its proper divisors (3163883260).

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

2549541380 is a wasteful number, since it uses less digits than its factorization.

2549541380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 909 (or 907 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 41.

The square root of 2549541380 is about 50492.9834729539. The cubic root of 2549541380 is about 1366.1152991675.

The spelling of 2549541380 in words is "two billion, five hundred forty-nine million, five hundred forty-one thousand, three hundred eighty".