1216061834 has 8 divisors (see below), whose sum is σ = 1964407620. Its totient is φ = 561259296.

The previous prime is 1216061827. The next prime is 1216061849. The reversal of 1216061834 is 4381606121.

It can be written as a sum of positive squares in 2 ways, for example, as 1148871025 + 67190809 = 33895^2 + 8197^2 .

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

It is a super-2 number, since 2×1216061834² = 2957612768222887112, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1216061834.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23385779 + ... + 23385830.

Almost surely, 2^1216061834 is an apocalyptic number.

1216061834 is a deficient number, since it is larger than the sum of its proper divisors (748345786).

1216061834 is a wasteful number, since it uses less digits than its factorization.

1216061834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46771624.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 1216061834 is about 34872.0781428351. The cubic root of 1216061834 is about 1067.3787510623.

Adding to 1216061834 its reverse (4381606121), we get a palindrome (5597667955).

The spelling of 1216061834 in words is "one billion, two hundred sixteen million, sixty-one thousand, eight hundred thirty-four".