1289231893000 has 64 divisors (see below), whose sum is σ = 3021840432000. Its totient is φ = 514831595200.

The previous prime is 1289231892989. The next prime is 1289231893013. The reversal of 1289231893000 is 3981329821.

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, 477154 + ... + 1675153.

It is an arithmetic number, because the mean of its divisors is an integer number (47216256750).

Almost surely, 2^{1289231893000} is an apocalyptic number.

1289231893000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1289231893000 is an abundant number, since it is smaller than the sum of its proper divisors (1732608539000).

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

1289231893000 is a wasteful number, since it uses less digits than its factorization.

1289231893000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2152927 (or 2152913 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 46.

The spelling of 1289231893000 in words is "one trillion, two hundred eighty-nine billion, two hundred thirty-one million, eight hundred ninety-three thousand".