2581349290 has 16 divisors (see below), whose sum is σ = 5003846568. Its totient is φ = 953113536.

The previous prime is 2581349269. The next prime is 2581349333. The reversal of 2581349290 is 929431852.

2581349290 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 1443164121 + 1138185169 = 37989^2 + 33737^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9928137 + ... + 9928396.

Almost surely, 2^2581349290 is an apocalyptic number.

2581349290 is a deficient number, since it is larger than the sum of its proper divisors (2422497278).

2581349290 is a wasteful number, since it uses less digits than its factorization.

2581349290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19856553.

The product of its (nonzero) digits is 155520, while the sum is 43.

The square root of 2581349290 is about 50806.9807211568. The cubic root of 2581349290 is about 1371.7730236343.

The spelling of 2581349290 in words is "two billion, five hundred eighty-one million, three hundred forty-nine thousand, two hundred ninety".