1214021613 has 8 divisors (see below), whose sum is σ = 1849937728. Its totient is φ = 693726624.

The previous prime is 1214021593. The next prime is 1214021713. The reversal of 1214021613 is 3161204121.

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

It is a de Polignac number, because none of the positive numbers 2^k-1214021613 is a prime.

It is a super-2 number, since 2×1214021613² = 2947696953662243538, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 57810553 = 1214021613 / (1 + 2 + 1 + 4 + 0 + 2 + 1 + 6 + 1 + 3).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1214021613.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1214021513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28905256 + ... + 28905297.

It is an arithmetic number, because the mean of its divisors is an integer number (231242216).

Almost surely, 2^1214021613 is an apocalyptic number.

It is an amenable number.

1214021613 is a deficient number, since it is larger than the sum of its proper divisors (635916115).

1214021613 is an equidigital number, since it uses as much as digits as its factorization.

1214021613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57810563.

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 1214021613 is about 34842.8129317941. The cubic root of 1214021613 is about 1066.7814931832.

Adding to 1214021613 its reverse (3161204121), we get a palindrome (4375225734).

The spelling of 1214021613 in words is "one billion, two hundred fourteen million, twenty-one thousand, six hundred thirteen".