1213664011 has 8 divisors (see below), whose sum is σ = 1387277280. Its totient is φ = 1040108928.

The previous prime is 1213663987. The next prime is 1213664057. The reversal of 1213664011 is 1104663121.

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 1213664011 - 2⁹ = 1213663499 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1213664071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48225 + ... + 68941.

It is an arithmetic number, because the mean of its divisors is an integer number (173409660).

Almost surely, 2^1213664011 is an apocalyptic number.

1213664011 is a deficient number, since it is larger than the sum of its proper divisors (173613269).

1213664011 is an equidigital number, since it uses as much as digits as its factorization.

1213664011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29093.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 1213664011 is about 34837.6809073164. The cubic root of 1213664011 is about 1066.6767392387.

The spelling of 1213664011 in words is "one billion, two hundred thirteen million, six hundred sixty-four thousand, eleven".