1113201857 has 4 divisors (see below), whose sum is σ = 1121327556. Its totient is φ = 1105076160.

The previous prime is 1113201841. The next prime is 1113201883. The reversal of 1113201857 is 7581023111.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 628805776 + 484396081 = 25076^2 + 22009^2 .

It is a cyclic number.

It is not a de Polignac number, because 1113201857 - 2⁴ = 1113201841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1113201827) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4062644 + ... + 4062917.

It is an arithmetic number, because the mean of its divisors is an integer number (280331889).

Almost surely, 2^1113201857 is an apocalyptic number.

It is an amenable number.

1113201857 is a deficient number, since it is larger than the sum of its proper divisors (8125699).

1113201857 is an equidigital number, since it uses as much as digits as its factorization.

1113201857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8125698.

The product of its (nonzero) digits is 1680, while the sum is 29.

The square root of 1113201857 is about 33364.6797826684. The cubic root of 1113201857 is about 1036.3934049637.

Adding to 1113201857 its reverse (7581023111), we get a palindrome (8694224968).

The spelling of 1113201857 in words is "one billion, one hundred thirteen million, two hundred one thousand, eight hundred fifty-seven".