2523581940 has 48 divisors (see below), whose sum is σ = 7708397760. Its totient is φ = 611777280.

The previous prime is 2523581933. The next prime is 2523581941. The reversal of 2523581940 is 491853252.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2523581941) 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, 1911145 + ... + 1912464.

It is an arithmetic number, because the mean of its divisors is an integer number (160591620).

Almost surely, 2^2523581940 is an apocalyptic number.

2523581940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2523581940 is an abundant number, since it is smaller than the sum of its proper divisors (5184815820).

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

2523581940 is a wasteful number, since it uses less digits than its factorization.

2523581940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3823632 (or 3823630 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 39.

The square root of 2523581940 is about 50235.2658995650. The cubic root of 2523581940 is about 1361.4628758733.

The spelling of 2523581940 in words is "two billion, five hundred twenty-three million, five hundred eighty-one thousand, nine hundred forty".