1056198169 has 8 divisors (see below), whose sum is σ = 1143730952. Its totient is φ = 969563520.

The previous prime is 1056198149. The next prime is 1056198173. The reversal of 1056198169 is 9618916501.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 42094144 + 1014104025 = 6488^2 + 31845^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1056198169 - 2⁵ = 1056198137 is a prime.

It is a super-2 number, since 2×1056198169² = 2231109144397905122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1056198149) 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 7 ways as a sum of consecutive naturals, for example, 222084 + ... + 226789.

It is an arithmetic number, because the mean of its divisors is an integer number (142966369).

Almost surely, 2^1056198169 is an apocalyptic number.

It is an amenable number.

1056198169 is a deficient number, since it is larger than the sum of its proper divisors (87532783).

1056198169 is a wasteful number, since it uses less digits than its factorization.

1056198169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 449067.

The product of its (nonzero) digits is 116640, while the sum is 46.

The square root of 1056198169 is about 32499.2025902175. The cubic root of 1056198169 is about 1018.3923698135.

The spelling of 1056198169 in words is "one billion, fifty-six million, one hundred ninety-eight thousand, one hundred sixty-nine".