1056862138 has 8 divisors (see below), whose sum is σ = 1639958580. Its totient is φ = 510209280.

The previous prime is 1056862133. The next prime is 1056862139. The reversal of 1056862138 is 8312686501.

It can be written as a sum of positive squares in 2 ways, for example, as 1055795049 + 1067089 = 32493^2 + 1033^2 .

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

It is a super-2 number, since 2×1056862138² = 2233915157475862088, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1056862138.

It is not an unprimeable number, because it can be changed into a prime (1056862133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9110823 + ... + 9110938.

Almost surely, 2^1056862138 is an apocalyptic number.

1056862138 is a deficient number, since it is larger than the sum of its proper divisors (583096442).

1056862138 is a wasteful number, since it uses less digits than its factorization.

1056862138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18221792.

The product of its (nonzero) digits is 69120, while the sum is 40.

The square root of 1056862138 is about 32509.4161436344. The cubic root of 1056862138 is about 1018.6057260255.

The spelling of 1056862138 in words is "one billion, fifty-six million, eight hundred sixty-two thousand, one hundred thirty-eight".