1889693712 has 50 divisors (see below), whose sum is σ = 5469325598. Its totient is φ = 629897472.

The previous prime is 1889693699. The next prime is 1889693783. The reversal of 1889693712 is 2173969881.

1889693712 is a `hidden beast` number, since 188 + 96 + 9 + 371 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1234538496 + 655155216 = 35136^2 + 25596^2 .

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 727753 + ... + 730344.

Almost surely, 2^1889693712 is an apocalyptic number.

1889693712 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1889693712 is an abundant number, since it is smaller than the sum of its proper divisors (3579631886).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1889693712 is a wasteful number, since it uses less digits than its factorization.

1889693712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1458117 (or 1458102 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 54.

The square root of 1889693712 is about 43470.6074491719. The cubic root of 1889693712 is about 1236.3187979623.

The spelling of 1889693712 in words is "one billion, eight hundred eighty-nine million, six hundred ninety-three thousand, seven hundred twelve".