1117961853 has 4 divisors (see below), whose sum is σ = 1490615808. Its totient is φ = 745307900.

The previous prime is 1117961833. The next prime is 1117961857. The reversal of 1117961853 is 3581697111.

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.

It is a cyclic number.

It is not a de Polignac number, because 1117961853 - 2¹⁰ = 1117960829 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1117961857) 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, 186326973 + ... + 186326978.

It is an arithmetic number, because the mean of its divisors is an integer number (372653952).

Almost surely, 2^1117961853 is an apocalyptic number.

It is an amenable number.

1117961853 is a deficient number, since it is larger than the sum of its proper divisors (372653955).

1117961853 is an equidigital number, since it uses as much as digits as its factorization.

1117961853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372653954.

The product of its digits is 45360, while the sum is 42.

The square root of 1117961853 is about 33435.9365503645. The cubic root of 1117961853 is about 1037.8684934434.

The spelling of 1117961853 in words is "one billion, one hundred seventeen million, nine hundred sixty-one thousand, eight hundred fifty-three".