1162255989 has 8 divisors (see below), whose sum is σ = 1549910880. Its totient is φ = 774719216.

The previous prime is 1162255957. The next prime is 1162255993. The reversal of 1162255989 is 9895522611.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1162255989 - 2⁵ = 1162255957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1162255789) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3219 + ... + 48320.

It is an arithmetic number, because the mean of its divisors is an integer number (193738860).

Almost surely, 2^1162255989 is an apocalyptic number.

It is an amenable number.

1162255989 is a deficient number, since it is larger than the sum of its proper divisors (387654891).

1162255989 is an equidigital number, since it uses as much as digits as its factorization.

1162255989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59059.

The product of its digits is 388800, while the sum is 48.

The square root of 1162255989 is about 34091.8757037509. The cubic root of 1162255989 is about 1051.3982849233.

The spelling of 1162255989 in words is "one billion, one hundred sixty-two million, two hundred fifty-five thousand, nine hundred eighty-nine".