1026257049 has 24 divisors (see below), whose sum is σ = 1557862592. Its totient is φ = 650190240.

The previous prime is 1026257047. The next prime is 1026257059. The reversal of 1026257049 is 9407526201.

It is not a de Polignac number, because 1026257049 - 2¹ = 1026257047 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1026257047) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21517 + ... + 50154.

Almost surely, 2^1026257049 is an apocalyptic number.

It is an amenable number.

1026257049 is a deficient number, since it is larger than the sum of its proper divisors (531605543).

1026257049 is a wasteful number, since it uses less digits than its factorization.

1026257049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71757 (or 71754 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 1026257049 is about 32035.2469789137. The cubic root of 1026257049 is about 1008.6768442869.

The spelling of 1026257049 in words is "one billion, twenty-six million, two hundred fifty-seven thousand, forty-nine".