1026513449 has 4 divisors (see below), whose sum is σ = 1105476036. Its totient is φ = 947550864.

The previous prime is 1026513413. The next prime is 1026513457. The reversal of 1026513449 is 9443156201.

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 442807849 + 583705600 = 21043^2 + 24160^2 .

It is not a de Polignac number, because 1026513449 - 2²⁰ = 1025464873 is a prime.

It is a super-4 number, since 4×1026513449⁴ (a number of 37 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1026513149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39481274 + ... + 39481299.

It is an arithmetic number, because the mean of its divisors is an integer number (276369009).

Almost surely, 2^1026513449 is an apocalyptic number.

It is an amenable number.

1026513449 is a deficient number, since it is larger than the sum of its proper divisors (78962587).

1026513449 is an equidigital number, since it uses as much as digits as its factorization.

1026513449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78962586.

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 1026513449 is about 32039.2485710886. The cubic root of 1026513449 is about 1008.7608398797.

The spelling of 1026513449 in words is "one billion, twenty-six million, five hundred thirteen thousand, four hundred forty-nine".