1213461379 has 16 divisors (see below), whose sum is σ = 1343674080. Its totient is φ = 1088720640.

The previous prime is 1213461371. The next prime is 1213461397. The reversal of 1213461379 is 9731643121.

It is a cyclic number.

It is not a de Polignac number, because 1213461379 - 2³ = 1213461371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1213461371) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 143532 + ... + 151750.

It is an arithmetic number, because the mean of its divisors is an integer number (83979630).

Almost surely, 2^1213461379 is an apocalyptic number.

1213461379 is a deficient number, since it is larger than the sum of its proper divisors (130212701).

1213461379 is a wasteful number, since it uses less digits than its factorization.

1213461379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8550.

The product of its digits is 27216, while the sum is 37.

The square root of 1213461379 is about 34834.7725555945. The cubic root of 1213461379 is about 1066.6173722120.

The spelling of 1213461379 in words is "one billion, two hundred thirteen million, four hundred sixty-one thousand, three hundred seventy-nine".