1213291149 has 8 divisors (see below), whose sum is σ = 1848824640. Its totient is φ = 693309216.

The previous prime is 1213291129. The next prime is 1213291187. The reversal of 1213291149 is 9411923121.

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

It is not a de Polignac number, because 1213291149 - 2¹⁵ = 1213258381 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213291129) 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, 28887864 + ... + 28887905.

It is an arithmetic number, because the mean of its divisors is an integer number (231103080).

Almost surely, 2^1213291149 is an apocalyptic number.

It is an amenable number.

1213291149 is a deficient number, since it is larger than the sum of its proper divisors (635533491).

1213291149 is an equidigital number, since it uses as much as digits as its factorization.

1213291149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57775779.

The product of its digits is 3888, while the sum is 33.

The square root of 1213291149 is about 34832.3290780275. The cubic root of 1213291149 is about 1066.5674931993.

The spelling of 1213291149 in words is "one billion, two hundred thirteen million, two hundred ninety-one thousand, one hundred forty-nine".