1216644341 has 8 divisors (see below), whose sum is σ = 1329979584. Its totient is φ = 1103764320.

The previous prime is 1216644301. The next prime is 1216644371. The reversal of 1216644341 is 1434466121.

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

It is a cyclic number.

It is not a de Polignac number, because 1216644341 - 2⁶ = 1216644277 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1216644298 and 1216644307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1216644301) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108200 + ... + 118913.

It is an arithmetic number, because the mean of its divisors is an integer number (166247448).

Almost surely, 2^1216644341 is an apocalyptic number.

1216644341 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1216644341 is a deficient number, since it is larger than the sum of its proper divisors (113335243).

1216644341 is a wasteful number, since it uses less digits than its factorization.

1216644341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227611.

The product of its digits is 13824, while the sum is 32.

The square root of 1216644341 is about 34880.4291974740. The cubic root of 1216644341 is about 1067.5491525796.

The spelling of 1216644341 in words is "one billion, two hundred sixteen million, six hundred forty-four thousand, three hundred forty-one".