1129890818 has 16 divisors (see below), whose sum is σ = 1940193024. Its totient is φ = 483429600.

The previous prime is 1129890787. The next prime is 1129890859. The reversal of 1129890818 is 8180989211.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58730 + ... + 75557.

It is an arithmetic number, because the mean of its divisors is an integer number (121262064).

Almost surely, 2^1129890818 is an apocalyptic number.

1129890818 is a deficient number, since it is larger than the sum of its proper divisors (810302206).

1129890818 is a wasteful number, since it uses less digits than its factorization.

1129890818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134897.

The product of its (nonzero) digits is 82944, while the sum is 47.

The square root of 1129890818 is about 33613.8486044071. The cubic root of 1129890818 is about 1041.5468899620.

The spelling of 1129890818 in words is "one billion, one hundred twenty-nine million, eight hundred ninety thousand, eight hundred eighteen".