1089250775 has 12 divisors (see below), whose sum is σ = 1430122752. Its totient is φ = 820141440.

The previous prime is 1089250769. The next prime is 1089250777. The reversal of 1089250775 is 5770529801.

It is not a de Polignac number, because 1089250775 - 2⁶ = 1089250711 is a prime.

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1089250777) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1281047 + ... + 1281896.

It is an arithmetic number, because the mean of its divisors is an integer number (119176896).

Almost surely, 2^1089250775 is an apocalyptic number.

1089250775 is a deficient number, since it is larger than the sum of its proper divisors (340871977).

1089250775 is a wasteful number, since it uses less digits than its factorization.

1089250775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2562970 (or 2562965 counting only the distinct ones).

The product of its (nonzero) digits is 176400, while the sum is 44.

The square root of 1089250775 is about 33003.7994024930. The cubic root of 1089250775 is about 1028.9066145844.

The spelling of 1089250775 in words is "one billion, eighty-nine million, two hundred fifty thousand, seven hundred seventy-five".