1126889380 has 24 divisors (see below), whose sum is σ = 2406579840. Its totient is φ = 443115360.

The previous prime is 1126889369. The next prime is 1126889383. The reversal of 1126889380 is 839886211.

It is a self number, because there is not a number n which added to its sum of digits gives 1126889380.

It is not an unprimeable number, because it can be changed into a prime (1126889383) 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, 476316 + ... + 478675.

It is an arithmetic number, because the mean of its divisors is an integer number (100274160).

Almost surely, 2^1126889380 is an apocalyptic number.

1126889380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1126889380 is an abundant number, since it is smaller than the sum of its proper divisors (1279690460).

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

1126889380 is a wasteful number, since it uses less digits than its factorization.

1126889380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 955059 (or 955057 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 46.

The square root of 1126889380 is about 33569.1730610094. The cubic root of 1126889380 is about 1040.6238182974.

The spelling of 1126889380 in words is "one billion, one hundred twenty-six million, eight hundred eighty-nine thousand, three hundred eighty".