1871877222 has 64 divisors (see below), whose sum is σ = 4325126400. Its totient is φ = 599607360.

The previous prime is 1871877221. The next prime is 1871877229. The reversal of 1871877222 is 2227781781.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1871877221) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 142029 + ... + 154647.

It is an arithmetic number, because the mean of its divisors is an integer number (67580100).

Almost surely, 2^1871877222 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1871877222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2162563200).

1871877222 is an abundant number, since it is smaller than the sum of its proper divisors (2453249178).

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

1871877222 is a wasteful number, since it uses less digits than its factorization.

1871877222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12738 (or 12732 counting only the distinct ones).

The product of its digits is 175616, while the sum is 45.

The square root of 1871877222 is about 43265.1964285383. The cubic root of 1871877222 is about 1232.4210849607.

The spelling of 1871877222 in words is "one billion, eight hundred seventy-one million, eight hundred seventy-seven thousand, two hundred twenty-two".