1129894851900 has 288 divisors, whose sum is σ = 3543141280000. Its totient is φ = 277032130560.

The previous prime is 1129894851857. The next prime is 1129894851907. The reversal of 1129894851900 is 91584989211.

It is a super-2 number, since 2×1129894851900² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1129894851907) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 86251551 + ... + 86264649.

Almost surely, 2^{1129894851900} is an apocalyptic number.

1129894851900 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 1129894851900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1771570640000).

1129894851900 is an abundant number, since it is smaller than the sum of its proper divisors (2413246428100).

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

1129894851900 is a wasteful number, since it uses less digits than its factorization.

1129894851900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13581 (or 13574 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 57.

The spelling of 1129894851900 in words is "one trillion, one hundred twenty-nine billion, eight hundred ninety-four million, eight hundred fifty-one thousand, nine hundred".