1057842786 has 128 divisors (see below), whose sum is σ = 2874009600. Its totient is φ = 250652160.

The previous prime is 1057842739. The next prime is 1057842787. The reversal of 1057842786 is 6872487501.

It is a super-3 number, since 3×1057842786³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1057842787) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 533545 + ... + 535523.

It is an arithmetic number, because the mean of its divisors is an integer number (22453200).

Almost surely, 2^1057842786 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1057842786, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1437004800).

1057842786 is an abundant number, since it is smaller than the sum of its proper divisors (1816166814).

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

1057842786 is a wasteful number, since it uses less digits than its factorization.

1057842786 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2104.

The product of its (nonzero) digits is 752640, while the sum is 48.

The square root of 1057842786 is about 32524.4951690261. The cubic root of 1057842786 is about 1018.9206787640.

The spelling of 1057842786 in words is "one billion, fifty-seven million, eight hundred forty-two thousand, seven hundred eighty-six".