2545944380 has 24 divisors (see below), whose sum is σ = 6110266848. Its totient is φ = 872895168.

The previous prime is 2545944337. The next prime is 2545944383. The reversal of 2545944380 is 834495452.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2545944383) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9092519 + ... + 9092798.

It is an arithmetic number, because the mean of its divisors is an integer number (254594452).

Almost surely, 2^2545944380 is an apocalyptic number.

2545944380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2545944380 is an abundant number, since it is smaller than the sum of its proper divisors (3564322468).

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

2545944380 is a wasteful number, since it uses less digits than its factorization.

2545944380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18185333 (or 18185331 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 44.

The square root of 2545944380 is about 50457.3520906518. The cubic root of 2545944380 is about 1365.4725391921.

The spelling of 2545944380 in words is "two billion, five hundred forty-five million, nine hundred forty-four thousand, three hundred eighty".