1889739005 has 16 divisors (see below), whose sum is σ = 2827246464. Its totient is φ = 1178018880.

The previous prime is 1889738969. The next prime is 1889739029. The reversal of 1889739005 is 5009379881.

It is not a de Polignac number, because 1889739005 - 2²⁶ = 1822630141 is a prime.

It is a super-2 number, since 2×1889739005² = 7142227014036780050, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2453822 + ... + 2454591.

It is an arithmetic number, because the mean of its divisors is an integer number (176702904).

Almost surely, 2^1889739005 is an apocalyptic number.

It is an amenable number.

1889739005 is a deficient number, since it is larger than the sum of its proper divisors (937507459).

1889739005 is a wasteful number, since it uses less digits than its factorization.

1889739005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4908436.

The product of its (nonzero) digits is 544320, while the sum is 50.

The square root of 1889739005 is about 43471.1284072544. The cubic root of 1889739005 is about 1236.3286754255.

The spelling of 1889739005 in words is "one billion, eight hundred eighty-nine million, seven hundred thirty-nine thousand, five".