117813890 has 8 divisors (see below), whose sum is σ = 212065020. Its totient is φ = 47125552.

The previous prime is 117813881. The next prime is 117813907. The reversal of 117813890 is 98318711.

It can be written as a sum of positive squares in 2 ways, for example, as 117440569 + 373321 = 10837^2 + 611^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×117813890² = 27760225353864200, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5890685 + ... + 5890704.

Almost surely, 2^117813890 is an apocalyptic number.

117813890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

117813890 is a deficient number, since it is larger than the sum of its proper divisors (94251130).

117813890 is a wasteful number, since it uses less digits than its factorization.

117813890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11781396.

The product of its (nonzero) digits is 12096, while the sum is 38.

The square root of 117813890 is about 10854.2107036855. The cubic root of 117813890 is about 490.2288116431.

The spelling of 117813890 in words is "one hundred seventeen million, eight hundred thirteen thousand, eight hundred ninety".