2581377902 has 8 divisors (see below), whose sum is σ = 3872629200. Its totient is φ = 1290501504.

The previous prime is 2581377901. The next prime is 2581377907. The reversal of 2581377902 is 2097731852.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2581377901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75827 + ... + 104462.

It is an arithmetic number, because the mean of its divisors is an integer number (484078650).

Almost surely, 2^2581377902 is an apocalyptic number.

2581377902 is a deficient number, since it is larger than the sum of its proper divisors (1291251298).

2581377902 is a wasteful number, since it uses less digits than its factorization.

2581377902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187450.

The product of its (nonzero) digits is 211680, while the sum is 44.

The square root of 2581377902 is about 50807.2622958569. The cubic root of 2581377902 is about 1371.7780919171.

The spelling of 2581377902 in words is "two billion, five hundred eighty-one million, three hundred seventy-seven thousand, nine hundred two".