1089971852 has 6 divisors (see below), whose sum is σ = 1907450748. Its totient is φ = 544985924.

The previous prime is 1089971843. The next prime is 1089971887. The reversal of 1089971852 is 2581799801.

It is a self number, because there is not a number n which added to its sum of digits gives 1089971852.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 136246478 + ... + 136246485.

It is an arithmetic number, because the mean of its divisors is an integer number (317908458).

Almost surely, 2^1089971852 is an apocalyptic number.

It is an amenable number.

1089971852 is a deficient number, since it is larger than the sum of its proper divisors (817478896).

1089971852 is a wasteful number, since it uses less digits than its factorization.

1089971852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272492967 (or 272492965 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 50.

The square root of 1089971852 is about 33014.7217465179. The cubic root of 1089971852 is about 1029.1336076873.

The spelling of 1089971852 in words is "one billion, eighty-nine million, nine hundred seventy-one thousand, eight hundred fifty-two".