1153780870 has 64 divisors (see below), whose sum is σ = 2326579200. Its totient is φ = 408418560.

The previous prime is 1153780867. The next prime is 1153780891. The reversal of 1153780870 is 780873511.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 655051 + ... + 656809.

It is an arithmetic number, because the mean of its divisors is an integer number (36352800).

Almost surely, 2^1153780870 is an apocalyptic number.

1153780870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1153780870 is an abundant number, since it is smaller than the sum of its proper divisors (1172798330).

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

1153780870 is a wasteful number, since it uses less digits than its factorization.

1153780870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1933.

The product of its (nonzero) digits is 47040, while the sum is 40.

The square root of 1153780870 is about 33967.3500585489. The cubic root of 1153780870 is about 1048.8364647196.

The spelling of 1153780870 in words is "one billion, one hundred fifty-three million, seven hundred eighty thousand, eight hundred seventy".