1162561489 has 4 divisors (see below), whose sum is σ = 1163508660. Its totient is φ = 1161614320.

The previous prime is 1162561481. The next prime is 1162561501. The reversal of 1162561489 is 9841652611.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1142980864 + 19580625 = 33808^2 + 4425^2 .

It is a cyclic number.

It is not a de Polignac number, because 1162561489 - 2³ = 1162561481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1162561481) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 471742 + ... + 474199.

It is an arithmetic number, because the mean of its divisors is an integer number (290877165).

Almost surely, 2^1162561489 is an apocalyptic number.

It is an amenable number.

1162561489 is a deficient number, since it is larger than the sum of its proper divisors (947171).

1162561489 is an equidigital number, since it uses as much as digits as its factorization.

1162561489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 947170.

The product of its digits is 103680, while the sum is 43.

The square root of 1162561489 is about 34096.3559489867. The cubic root of 1162561489 is about 1051.4903971718.

The spelling of 1162561489 in words is "one billion, one hundred sixty-two million, five hundred sixty-one thousand, four hundred eighty-nine".