1945969268 has 12 divisors (see below), whose sum is σ = 3497485572. Its totient is φ = 946687680.

The previous prime is 1945969219. The next prime is 1945969297. The reversal of 1945969268 is 8629695491.

It can be written as a sum of positive squares in 2 ways, for example, as 1229764624 + 716204644 = 35068^2 + 26762^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6574073 + ... + 6574368.

It is an arithmetic number, because the mean of its divisors is an integer number (291457131).

Almost surely, 2^1945969268 is an apocalyptic number.

It is an amenable number.

1945969268 is a deficient number, since it is larger than the sum of its proper divisors (1551516304).

1945969268 is a wasteful number, since it uses less digits than its factorization.

1945969268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13148482 (or 13148480 counting only the distinct ones).

The product of its digits is 8398080, while the sum is 59.

The square root of 1945969268 is about 44113.1416700284. The cubic root of 1945969268 is about 1248.4715757371.

The spelling of 1945969268 in words is "one billion, nine hundred forty-five million, nine hundred sixty-nine thousand, two hundred sixty-eight".