1089256258 has 4 divisors (see below), whose sum is σ = 1633884390. Its totient is φ = 544628128.

The previous prime is 1089256253. The next prime is 1089256271. The reversal of 1089256258 is 8526529801.

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

It can be written as a sum of positive squares in only one way, i.e., 1013339889 + 75916369 = 31833^2 + 8713^2 .

It is not an unprimeable number, because it can be changed into a prime (1089256253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 272314063 + ... + 272314066.

Almost surely, 2^1089256258 is an apocalyptic number.

1089256258 is a deficient number, since it is larger than the sum of its proper divisors (544628132).

1089256258 is an equidigital number, since it uses as much as digits as its factorization.

1089256258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 544628131.

The product of its (nonzero) digits is 345600, while the sum is 46.

The square root of 1089256258 is about 33003.8824685824. The cubic root of 1089256258 is about 1028.9083409960.

The spelling of 1089256258 in words is "one billion, eighty-nine million, two hundred fifty-six thousand, two hundred fifty-eight".