1081582745 has 8 divisors (see below), whose sum is σ = 1298224584. Its totient is φ = 865049344.

The previous prime is 1081582739. The next prime is 1081582763. The reversal of 1081582745 is 5472851801.

It can be written as a sum of positive squares in 4 ways, for example, as 118287376 + 963295369 = 10876^2 + 31037^2 .

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 1081582745 - 2¹⁴ = 1081566361 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3254 + ... + 46623.

It is an arithmetic number, because the mean of its divisors is an integer number (162278073).

Almost surely, 2^1081582745 is an apocalyptic number.

It is an amenable number.

1081582745 is a deficient number, since it is larger than the sum of its proper divisors (216641839).

1081582745 is an equidigital number, since it uses as much as digits as its factorization.

1081582745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54219.

The product of its (nonzero) digits is 89600, while the sum is 41.

The square root of 1081582745 is about 32887.4253324884. The cubic root of 1081582745 is about 1026.4865189037.

The spelling of 1081582745 in words is "one billion, eighty-one million, five hundred eighty-two thousand, seven hundred forty-five".