2190223278 has 24 divisors (see below), whose sum is σ = 4779629400. Its totient is φ = 724821264.

The previous prime is 2190223249. The next prime is 2190223303. The reversal of 2190223278 is 8723220912.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 435193 + ... + 440196.

It is an arithmetic number, because the mean of its divisors is an integer number (199151225).

Almost surely, 2^2190223278 is an apocalyptic number.

2190223278 is an abundant number, since it is smaller than the sum of its proper divisors (2589406122).

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

2190223278 is a wasteful number, since it uses less digits than its factorization.

2190223278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 875536 (or 875533 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 2190223278 is about 46799.8213458128. The cubic root of 2190223278 is about 1298.6619917866.

The spelling of 2190223278 in words is "two billion, one hundred ninety million, two hundred twenty-three thousand, two hundred seventy-eight".