1153785812 has 12 divisors (see below), whose sum is σ = 2038729056. Its totient is φ = 571291800.

The previous prime is 1153785749. The next prime is 1153785827. The reversal of 1153785812 is 2185873511.

It is a self number, because there is not a number n which added to its sum of digits gives 1153785812.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1399814 + ... + 1400637.

It is an arithmetic number, because the mean of its divisors is an integer number (169894088).

Almost surely, 2^1153785812 is an apocalyptic number.

It is an amenable number.

1153785812 is a deficient number, since it is larger than the sum of its proper divisors (884943244).

1153785812 is a wasteful number, since it uses less digits than its factorization.

1153785812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2800558 (or 2800556 counting only the distinct ones).

The product of its digits is 67200, while the sum is 41.

The square root of 1153785812 is about 33967.4228047993. The cubic root of 1153785812 is about 1048.8379622143.

The spelling of 1153785812 in words is "one billion, one hundred fifty-three million, seven hundred eighty-five thousand, eight hundred twelve".