1945372226 has 12 divisors (see below), whose sum is σ = 3394476198. Its totient is φ = 833730912.

The previous prime is 1945372217. The next prime is 1945372241. The reversal of 1945372226 is 6222735491.

It can be written as a sum of positive squares in only one way, i.e., 1850290225 + 95082001 = 43015^2 + 9751^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9925271 + ... + 9925466.

Almost surely, 2^1945372226 is an apocalyptic number.

1945372226 is a deficient number, since it is larger than the sum of its proper divisors (1449103972).

1945372226 is a wasteful number, since it uses less digits than its factorization.

1945372226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19850753 (or 19850746 counting only the distinct ones).

The product of its digits is 181440, while the sum is 41.

The square root of 1945372226 is about 44106.3739838133. The cubic root of 1945372226 is about 1248.3438816667.

The spelling of 1945372226 in words is "one billion, nine hundred forty-five million, three hundred seventy-two thousand, two hundred twenty-six".