2781773830 has 32 divisors (see below), whose sum is σ = 5485110048. Its totient is φ = 1007347200.

The previous prime is 2781773821. The next prime is 2781773861. The reversal of 2781773830 is 383771872.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25957 + ... + 78976.

It is an arithmetic number, because the mean of its divisors is an integer number (171409689).

Almost surely, 2^2781773830 is an apocalyptic number.

2781773830 is a deficient number, since it is larger than the sum of its proper divisors (2703336218).

2781773830 is a wasteful number, since it uses less digits than its factorization.

2781773830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105192.

The product of its (nonzero) digits is 395136, while the sum is 46.

The square root of 2781773830 is about 52742.5239251972. The cubic root of 2781773830 is about 1406.3948660505.

The spelling of 2781773830 in words is "two billion, seven hundred eighty-one million, seven hundred seventy-three thousand, eight hundred thirty".