1026493805 has 8 divisors (see below), whose sum is σ = 1243989144. Its totient is φ = 813064000.

The previous prime is 1026493799. The next prime is 1026493817. The reversal of 1026493805 is 5083946201.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 93741124 + 932752681 = 9682^2 + 30541^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1026493805 - 2¹⁰ = 1026492781 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent 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, 1015826 + ... + 1016835.

It is an arithmetic number, because the mean of its divisors is an integer number (155498643).

Almost surely, 2^1026493805 is an apocalyptic number.

It is an amenable number.

1026493805 is a deficient number, since it is larger than the sum of its proper divisors (217495339).

1026493805 is a wasteful number, since it uses less digits than its factorization.

1026493805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2032767.

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 1026493805 is about 32038.9420081250. The cubic root of 1026493805 is about 1008.7544050803.

The spelling of 1026493805 in words is "one billion, twenty-six million, four hundred ninety-three thousand, eight hundred five".