2529811980 has 96 divisors (see below), whose sum is σ = 7877990400. Its totient is φ = 673977024.

The previous prime is 2529811967. The next prime is 2529811987. The reversal of 2529811980 is 891189252.

2529811980 is a `hidden beast` number, since 2 + 529 + 8 + 119 + 8 + 0 = 666.

2529811980 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (2529811987) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 929061 + ... + 931779.

It is an arithmetic number, because the mean of its divisors is an integer number (82062400).

Almost surely, 2^2529811980 is an apocalyptic number.

2529811980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2529811980 is an abundant number, since it is smaller than the sum of its proper divisors (5348178420).

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

2529811980 is a wasteful number, since it uses less digits than its factorization.

2529811980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4460 (or 4452 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 45.

The square root of 2529811980 is about 50297.2363057852. The cubic root of 2529811980 is about 1362.5823161557.

The spelling of 2529811980 in words is "two billion, five hundred twenty-nine million, eight hundred eleven thousand, nine hundred eighty".