2013921215 has 4 divisors (see below), whose sum is σ = 2416705464. Its totient is φ = 1611136968.

The previous prime is 2013921197. The next prime is 2013921223. The reversal of 2013921215 is 5121293102.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2013921215 - 2²² = 2009726911 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 201392117 + ... + 201392126.

It is an arithmetic number, because the mean of its divisors is an integer number (604176366).

Almost surely, 2^2013921215 is an apocalyptic number.

2013921215 is a deficient number, since it is larger than the sum of its proper divisors (402784249).

2013921215 is an equidigital number, since it uses as much as digits as its factorization.

2013921215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 402784248.

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 2013921215 is about 44876.7335598303. The cubic root of 2013921215 is about 1262.8375653889.

The spelling of 2013921215 in words is "two billion, thirteen million, nine hundred twenty-one thousand, two hundred fifteen".