1914221613 has 8 divisors (see below), whose sum is σ = 2583046368. Its totient is φ = 1260772304.

The previous prime is 1914221599. The next prime is 1914221629. The reversal of 1914221613 is 3161224191.

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 1914221613 - 2¹² = 1914217517 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1914221693) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3843570 + ... + 3844067.

It is an arithmetic number, because the mean of its divisors is an integer number (322880796).

Almost surely, 2^1914221613 is an apocalyptic number.

It is an amenable number.

1914221613 is a deficient number, since it is larger than the sum of its proper divisors (668824755).

1914221613 is an equidigital number, since it uses as much as digits as its factorization.

1914221613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7687723.

The product of its digits is 2592, while the sum is 30.

The square root of 1914221613 is about 43751.8183964964. The cubic root of 1914221613 is about 1241.6448888953.

It can be divided in two parts, 19142 and 21613, that added together give a triangular number (40755 = T₂₈₅).

The spelling of 1914221613 in words is "one billion, nine hundred fourteen million, two hundred twenty-one thousand, six hundred thirteen".