1056156289 has 4 divisors (see below), whose sum is σ = 1056243456. Its totient is φ = 1056069124.

The previous prime is 1056156259. The next prime is 1056156301. The reversal of 1056156289 is 9826516501.

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 a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1056156289 - 2¹¹ = 1056154241 is a prime.

It is a super-2 number, since 2×1056156289² = 2230932213588503042, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1056156259) 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, 21769 + ... + 50854.

It is an arithmetic number, because the mean of its divisors is an integer number (264060864).

Almost surely, 2^1056156289 is an apocalyptic number.

It is an amenable number.

1056156289 is a deficient number, since it is larger than the sum of its proper divisors (87167).

1056156289 is an equidigital number, since it uses as much as digits as its factorization.

1056156289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87166.

The product of its (nonzero) digits is 129600, while the sum is 43.

The square root of 1056156289 is about 32498.5582603290. The cubic root of 1056156289 is about 1018.3789093230.

The spelling of 1056156289 in words is "one billion, fifty-six million, one hundred fifty-six thousand, two hundred eighty-nine".