1216016633 has 8 divisors (see below), whose sum is σ = 1351800576. Its totient is φ = 1086267600.

The previous prime is 1216016629. The next prime is 1216016657. The reversal of 1216016633 is 3366106121.

It is a happy number.

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 1216016633 - 2² = 1216016629 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1216016596 and 1216016605.

It is not an unprimeable number, because it can be changed into a prime (1216019633) 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 7 ways as a sum of consecutive naturals, for example, 1508303 + ... + 1509108.

It is an arithmetic number, because the mean of its divisors is an integer number (168975072).

Almost surely, 2^1216016633 is an apocalyptic number.

1216016633 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1216016633 is a deficient number, since it is larger than the sum of its proper divisors (135783943).

1216016633 is a wasteful number, since it uses less digits than its factorization.

1216016633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3017455.

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 1216016633 is about 34871.4300395037. The cubic root of 1216016633 is about 1067.3655260811.

The spelling of 1216016633 in words is "one billion, two hundred sixteen million, sixteen thousand, six hundred thirty-three".