1889722196 has 6 divisors (see below), whose sum is σ = 3307013850. Its totient is φ = 944861096.

The previous prime is 1889722189. The next prime is 1889722207. The reversal of 1889722196 is 6912279881.

It can be written as a sum of positive squares in only one way, i.e., 1555198096 + 334524100 = 39436^2 + 18290^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 236215271 + ... + 236215278.

It is an arithmetic number, because the mean of its divisors is an integer number (551168975).

Almost surely, 2^1889722196 is an apocalyptic number.

It is an amenable number.

1889722196 is a deficient number, since it is larger than the sum of its proper divisors (1417291654).

1889722196 is a wasteful number, since it uses less digits than its factorization.

1889722196 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 472430553 (or 472430551 counting only the distinct ones).

The product of its digits is 870912, while the sum is 53.

The square root of 1889722196 is about 43470.9350716085. The cubic root of 1889722196 is about 1236.3250097499.

The spelling of 1889722196 in words is "one billion, eight hundred eighty-nine million, seven hundred twenty-two thousand, one hundred ninety-six".