1056235369 has 16 divisors (see below), whose sum is σ = 1226776576. Its totient is φ = 890643600.

The previous prime is 1056235319. The next prime is 1056235393. The reversal of 1056235369 is 9635326501.

It is a happy number.

It is not a de Polignac number, because 1056235369 - 2¹⁷ = 1056104297 is a prime.

It is a super-2 number, since 2×1056235369² = 2231266309453132322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1056235319) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 689134 + ... + 690664.

It is an arithmetic number, because the mean of its divisors is an integer number (76673536).

Almost surely, 2^1056235369 is an apocalyptic number.

It is an amenable number.

1056235369 is a deficient number, since it is larger than the sum of its proper divisors (170541207).

1056235369 is a wasteful number, since it uses less digits than its factorization.

1056235369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3076.

The product of its (nonzero) digits is 145800, while the sum is 40.

The square root of 1056235369 is about 32499.7749069128. The cubic root of 1056235369 is about 1018.4043258247.

The spelling of 1056235369 in words is "one billion, fifty-six million, two hundred thirty-five thousand, three hundred sixty-nine".