1026758849 has 4 divisors (see below), whose sum is σ = 1026915780. Its totient is φ = 1026601920.

The previous prime is 1026758791. The next prime is 1026758861. The reversal of 1026758849 is 9488576201.

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 388287025 + 638471824 = 19705^2 + 25268^2 .

It is a cyclic number.

It is not a de Polignac number, because 1026758849 - 2¹⁶ = 1026693313 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1026758797 and 1026758806.

It is not an unprimeable number, because it can be changed into a prime (1026758869) 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, 68204 + ... + 81885.

It is an arithmetic number, because the mean of its divisors is an integer number (256728945).

Almost surely, 2^1026758849 is an apocalyptic number.

It is an amenable number.

1026758849 is a deficient number, since it is larger than the sum of its proper divisors (156931).

1026758849 is an equidigital number, since it uses as much as digits as its factorization.

1026758849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156930.

The product of its (nonzero) digits is 967680, while the sum is 50.

The square root of 1026758849 is about 32043.0780200654. The cubic root of 1026758849 is about 1008.8412188188.

The spelling of 1026758849 in words is "one billion, twenty-six million, seven hundred fifty-eight thousand, eight hundred forty-nine".