1869172082 has 18 divisors (see below), whose sum is σ = 2960931213. Its totient is φ = 884847024.

The previous prime is 1869172079. The next prime is 1869172121. The reversal of 1869172082 is 2802719681.

It can be written as a sum of positive squares in 2 ways, for example, as 1210274521 + 658897561 = 34789^2 + 25669^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=30571.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1160894 + ... + 1162502.

Almost surely, 2^1869172082 is an apocalyptic number.

1869172082 is a deficient number, since it is larger than the sum of its proper divisors (1091759131).

1869172082 is an frugal number, since it uses more digits than its factorization.

1869172082 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3258 (or 1630 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 44.

The square root of 1869172082 is about 43233.9228153079. The cubic root of 1869172082 is about 1231.8271217091.

The spelling of 1869172082 in words is "one billion, eight hundred sixty-nine million, one hundred seventy-two thousand, eighty-two".