1026983553 has 4 divisors (see below), whose sum is σ = 1369311408. Its totient is φ = 684655700.

The previous prime is 1026983527. The next prime is 1026983561. The reversal of 1026983553 is 3553896201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3553896201 = 3 ⋅1184632067.

It is a cyclic number.

It is not a de Polignac number, because 1026983553 - 2⁵ = 1026983521 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1026983563) 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, 171163923 + ... + 171163928.

It is an arithmetic number, because the mean of its divisors is an integer number (342327852).

Almost surely, 2^1026983553 is an apocalyptic number.

It is an amenable number.

1026983553 is a deficient number, since it is larger than the sum of its proper divisors (342327855).

1026983553 is an equidigital number, since it uses as much as digits as its factorization.

1026983553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342327854.

The product of its (nonzero) digits is 194400, while the sum is 42.

The square root of 1026983553 is about 32046.5841081386. The cubic root of 1026983553 is about 1008.9148077057.

The spelling of 1026983553 in words is "one billion, twenty-six million, nine hundred eighty-three thousand, five hundred fifty-three".