2581234890 has 32 divisors (see below), whose sum is σ = 6671500416. Its totient is φ = 635380800.

The previous prime is 2581234883. The next prime is 2581234897. The reversal of 2581234890 is 984321852.

It is an interprime number because it is at equal distance from previous prime (2581234883) and next prime (2581234897).

It is not an unprimeable number, because it can be changed into a prime (2581234897) 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, 3308886 + ... + 3309665.

It is an arithmetic number, because the mean of its divisors is an integer number (208484388).

Almost surely, 2^2581234890 is an apocalyptic number.

2581234890 is an abundant number, since it is smaller than the sum of its proper divisors (4090265526).

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

2581234890 is a wasteful number, since it uses less digits than its factorization.

2581234890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6618574.

The product of its (nonzero) digits is 138240, while the sum is 42.

The square root of 2581234890 is about 50805.8548791377. The cubic root of 2581234890 is about 1371.7527586314.

The spelling of 2581234890 in words is "two billion, five hundred eighty-one million, two hundred thirty-four thousand, eight hundred ninety".