1052643858 has 64 divisors (see below), whose sum is σ = 2478305280. Its totient is φ = 291771072.

The previous prime is 1052643857. The next prime is 1052643869. The reversal of 1052643858 is 8583462501.

1052643858 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×1052643858² = 2216118183570248328, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (1052643857) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 681435 + ... + 682977.

It is an arithmetic number, because the mean of its divisors is an integer number (38723520).

Almost surely, 2^1052643858 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1052643858, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1239152640).

1052643858 is an abundant number, since it is smaller than the sum of its proper divisors (1425661422).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1052643858 is a wasteful number, since it uses less digits than its factorization.

1052643858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2031.

The product of its (nonzero) digits is 230400, while the sum is 42.

The square root of 1052643858 is about 32444.4734585106. The cubic root of 1052643858 is about 1017.2487235964.

It can be divided in two parts, 1052643 and 858, that added together give a palindrome (1053501).

The spelling of 1052643858 in words is "one billion, fifty-two million, six hundred forty-three thousand, eight hundred fifty-eight".