1881779082 has 16 divisors (see below), whose sum is σ = 3770249760. Its totient is φ = 626144432.

The previous prime is 1881779077. The next prime is 1881779083. The reversal of 1881779082 is 2809771881.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (1881779083) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 275157 + ... + 281912.

It is an arithmetic number, because the mean of its divisors is an integer number (235640610).

Almost surely, 2^1881779082 is an apocalyptic number.

1881779082 is an abundant number, since it is smaller than the sum of its proper divisors (1888470678).

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

1881779082 is a wasteful number, since it uses less digits than its factorization.

1881779082 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 557637.

The product of its (nonzero) digits is 451584, while the sum is 51.

The square root of 1881779082 is about 43379.4776593725. The cubic root of 1881779082 is about 1234.5903523148.

The spelling of 1881779082 in words is "one billion, eight hundred eighty-one million, seven hundred seventy-nine thousand, eighty-two".