2581531674 has 16 divisors (see below), whose sum is σ = 5168741760. Its totient is φ = 859564160.

The previous prime is 2581531627. The next prime is 2581531681. The reversal of 2581531674 is 4761351852.

It is a happy number.

2581531674 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 an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 230679 + ... + 241610.

It is an arithmetic number, because the mean of its divisors is an integer number (323046360).

Almost surely, 2^2581531674 is an apocalyptic number.

2581531674 is an abundant number, since it is smaller than the sum of its proper divisors (2587210086).

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

2581531674 is a wasteful number, since it uses less digits than its factorization.

2581531674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 473205.

The product of its digits is 201600, while the sum is 42.

The square root of 2581531674 is about 50808.7755609206. The cubic root of 2581531674 is about 1371.8053301958.

The spelling of 2581531674 in words is "two billion, five hundred eighty-one million, five hundred thirty-one thousand, six hundred seventy-four".