117851963 has 4 divisors (see below), whose sum is σ = 119343840. Its totient is φ = 116360088.

The previous prime is 117851959. The next prime is 117851971. The reversal of 117851963 is 369158711.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 369158711 = 41 ⋅9003871.

It is a cyclic number.

It is not a de Polignac number, because 117851963 - 2² = 117851959 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 117851963.

It is not an unprimeable number, because it can be changed into a prime (117851953) 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, 745820 + ... + 745977.

It is an arithmetic number, because the mean of its divisors is an integer number (29835960).

Almost surely, 2^117851963 is an apocalyptic number.

117851963 is a deficient number, since it is larger than the sum of its proper divisors (1491877).

117851963 is an equidigital number, since it uses as much as digits as its factorization.

117851963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1491876.

The product of its digits is 45360, while the sum is 41.

The square root of 117851963 is about 10855.9643975098. The cubic root of 117851963 is about 490.2816137684.

The spelling of 117851963 in words is "one hundred seventeen million, eight hundred fifty-one thousand, nine hundred sixty-three".