1189089392920 has 256 divisors, whose sum is σ = 3231582842880. Its totient is φ = 387933235200.

The previous prime is 1189089392903. The next prime is 1189089392923. The reversal of 1189089392920 is 292939809811.

It is a super-2 number, since 2×1189089392920² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1189089392923) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 246134905 + ... + 246139735.

It is an arithmetic number, because the mean of its divisors is an integer number (12623370480).

Almost surely, 2^{1189089392920} is an apocalyptic number.

1189089392920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1189089392920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1615791421440).

1189089392920 is an abundant number, since it is smaller than the sum of its proper divisors (2042493449960).

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

1189089392920 is a wasteful number, since it uses less digits than its factorization.

1189089392920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6066 (or 6062 counting only the distinct ones).

The product of its (nonzero) digits is 5038848, while the sum is 61.

The spelling of 1189089392920 in words is "one trillion, one hundred eighty-nine billion, eighty-nine million, three hundred ninety-two thousand, nine hundred twenty".