2153913493 has 4 divisors (see below), whose sum is σ = 2154017440. Its totient is φ = 2153809548.

The previous prime is 2153913467. The next prime is 2153913527. The reversal of 2153913493 is 3943193512.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2153913493 - 2¹³ = 2153905301 is a prime.

It is a super-2 number, since 2×2153913493² = 9278686670654922098, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2153913403) 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 3 ways as a sum of consecutive naturals, for example, 9105 + ... + 66262.

It is an arithmetic number, because the mean of its divisors is an integer number (538504360).

Almost surely, 2^2153913493 is an apocalyptic number.

It is an amenable number.

2153913493 is a deficient number, since it is larger than the sum of its proper divisors (103947).

2153913493 is an equidigital number, since it uses as much as digits as its factorization.

2153913493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103946.

The product of its digits is 87480, while the sum is 40.

The square root of 2153913493 is about 46410.2735716996. The cubic root of 2153913493 is about 1291.4455068112.

The spelling of 2153913493 in words is "two billion, one hundred fifty-three million, nine hundred thirteen thousand, four hundred ninety-three".