2158403613 has 8 divisors (see below), whose sum is σ = 2970706176. Its totient is φ = 1392518400.

The previous prime is 2158403609. The next prime is 2158403617. The reversal of 2158403613 is 3163048512.

It is an interprime number because it is at equal distance from previous prime (2158403609) and next prime (2158403617).

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

It is not a de Polignac number, because 2158403613 - 2² = 2158403609 is a prime.

It is a super-2 number, since 2×2158403613² = 9317412313222907538, which contains 22 as substring.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2158403617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11604228 + ... + 11604413.

It is an arithmetic number, because the mean of its divisors is an integer number (371338272).

Almost surely, 2^2158403613 is an apocalyptic number.

It is an amenable number.

2158403613 is a deficient number, since it is larger than the sum of its proper divisors (812302563).

2158403613 is a wasteful number, since it uses less digits than its factorization.

2158403613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23208675.

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 2158403613 is about 46458.6225904299. The cubic root of 2158403613 is about 1292.3422807622.

It can be divided in two parts, 215840 and 3613, that added together give a triangular number (219453 = T₆₆₂).

The spelling of 2158403613 in words is "two billion, one hundred fifty-eight million, four hundred three thousand, six hundred thirteen".