1217116390 has 24 divisors (see below), whose sum is σ = 2548493712. Its totient is φ = 417296880.

The previous prime is 1217116331. The next prime is 1217116393. The reversal of 1217116390 is 936117121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1217116393) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1241466 + ... + 1242445.

It is an arithmetic number, because the mean of its divisors is an integer number (106187238).

Almost surely, 2^1217116390 is an apocalyptic number.

1217116390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1217116390 is an abundant number, since it is smaller than the sum of its proper divisors (1331377322).

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

1217116390 is a wasteful number, since it uses less digits than its factorization.

1217116390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2483932 (or 2483925 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 31.

The square root of 1217116390 is about 34887.1952154369. The cubic root of 1217116390 is about 1067.6872017839.

It can be divided in two parts, 12171 and 16390, that added together give a 4-th power (28561 = 13⁴).

The spelling of 1217116390 in words is "one billion, two hundred seventeen million, one hundred sixteen thousand, three hundred ninety".