1214820379 has 4 divisors (see below), whose sum is σ = 1215274176. Its totient is φ = 1214366584.

The previous prime is 1214820377. The next prime is 1214820403. The reversal of 1214820379 is 9730284121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9730284121 = 14843 ⋅655547.

It is a cyclic number.

It is not a de Polignac number, because 1214820379 - 2¹ = 1214820377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1214820377) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 222859 + ... + 228244.

It is an arithmetic number, because the mean of its divisors is an integer number (303818544).

Almost surely, 2^1214820379 is an apocalyptic number.

1214820379 is a deficient number, since it is larger than the sum of its proper divisors (453797).

1214820379 is an equidigital number, since it uses as much as digits as its factorization.

1214820379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 453796.

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 1214820379 is about 34854.2734682564. The cubic root of 1214820379 is about 1067.0154049916.

The spelling of 1214820379 in words is "one billion, two hundred fourteen million, eight hundred twenty thousand, three hundred seventy-nine".