2149271573 has 4 divisors (see below), whose sum is σ = 2149390848. Its totient is φ = 2149152300.

The previous prime is 2149271561. The next prime is 2149271587. The reversal of 2149271573 is 3751729412.

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 a de Polignac number, because none of the positive numbers 2^k-2149271573 is a prime.

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 2149271573.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2149271473) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26453 + ... + 70698.

It is an arithmetic number, because the mean of its divisors is an integer number (537347712).

Almost surely, 2^2149271573 is an apocalyptic number.

It is an amenable number.

2149271573 is a deficient number, since it is larger than the sum of its proper divisors (119275).

2149271573 is an equidigital number, since it uses as much as digits as its factorization.

2149271573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119274.

The product of its digits is 105840, while the sum is 41.

The square root of 2149271573 is about 46360.2369817066. The cubic root of 2149271573 is about 1290.5171039475.

The spelling of 2149271573 in words is "two billion, one hundred forty-nine million, two hundred seventy-one thousand, five hundred seventy-three".