1689911212 has 24 divisors (see below), whose sum is σ = 3313391760. Its totient is φ = 747380160.

The previous prime is 1689911203. The next prime is 1689911221. The reversal of 1689911212 is 2121199861.

It is an interprime number because it is at equal distance from previous prime (1689911203) and next prime (1689911221).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 517387 + ... + 520642.

It is an arithmetic number, because the mean of its divisors is an integer number (138057990).

Almost surely, 2^1689911212 is an apocalyptic number.

It is an amenable number.

1689911212 is a deficient number, since it is larger than the sum of its proper divisors (1623480548).

1689911212 is a wasteful number, since it uses less digits than its factorization.

1689911212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1038081 (or 1038079 counting only the distinct ones).

The product of its digits is 15552, while the sum is 40.

The square root of 1689911212 is about 41108.5296745092. The cubic root of 1689911212 is about 1191.1175651075.

The spelling of 1689911212 in words is "one billion, six hundred eighty-nine million, nine hundred eleven thousand, two hundred twelve".