1889192172012 has 24 divisors (see below), whose sum is σ = 4640121124800. Its totient is φ = 596587001616.

The previous prime is 1889192171941. The next prime is 1889192172017. The reversal of 1889192172012 is 2102712919881.

It is a super-2 number, since 2×1889192172012² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1889192172017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4142965062 + ... + 4142965517.

It is an arithmetic number, because the mean of its divisors is an integer number (193338380200).

Almost surely, 2^{1889192172012} is an apocalyptic number.

1889192172012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1889192172012 is an abundant number, since it is smaller than the sum of its proper divisors (2750928952788).

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

1889192172012 is a wasteful number, since it uses less digits than its factorization.

1889192172012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8285930605 (or 8285930603 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 51.

The spelling of 1889192172012 in words is "one trillion, eight hundred eighty-nine billion, one hundred ninety-two million, one hundred seventy-two thousand, twelve".