1945989196 has 24 divisors (see below), whose sum is σ = 3587506160. Its totient is φ = 921067200.

The previous prime is 1945989193. The next prime is 1945989203. The reversal of 1945989196 is 6919895491.

It is not an unprimeable number, because it can be changed into a prime (1945989193) 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, 95686 + ... + 114226.

Almost surely, 2^1945989196 is an apocalyptic number.

It is an amenable number.

1945989196 is a deficient number, since it is larger than the sum of its proper divisors (1641516964).

1945989196 is a wasteful number, since it uses less digits than its factorization.

1945989196 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19945 (or 19943 counting only the distinct ones).

The product of its digits is 6298560, while the sum is 61.

The square root of 1945989196 is about 44113.3675431836. The cubic root of 1945989196 is about 1248.4758374448.

The spelling of 1945989196 in words is "one billion, nine hundred forty-five million, nine hundred eighty-nine thousand, one hundred ninety-six".