1155435812 has 6 divisors (see below), whose sum is σ = 2022012678. Its totient is φ = 577717904.

The previous prime is 1155435811. The next prime is 1155435817. The reversal of 1155435812 is 2185345511.

It can be written as a sum of positive squares in only one way, i.e., 1101177856 + 54257956 = 33184^2 + 7366^2 .

It is not an unprimeable number, because it can be changed into a prime (1155435811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 144429473 + ... + 144429480.

It is an arithmetic number, because the mean of its divisors is an integer number (337002113).

Almost surely, 2^1155435812 is an apocalyptic number.

It is an amenable number.

1155435812 is a deficient number, since it is larger than the sum of its proper divisors (866576866).

1155435812 is a wasteful number, since it uses less digits than its factorization.

1155435812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288858957 (or 288858955 counting only the distinct ones).

The product of its digits is 24000, while the sum is 35.

The square root of 1155435812 is about 33991.7021050726. The cubic root of 1155435812 is about 1049.3376963129.

The spelling of 1155435812 in words is "one billion, one hundred fifty-five million, four hundred thirty-five thousand, eight hundred twelve".