2491523193 has 4 divisors (see below), whose sum is σ = 3322030928. Its totient is φ = 1661015460.

The previous prime is 2491523159. The next prime is 2491523201. The reversal of 2491523193 is 3913251942.

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.

It is not a de Polignac number, because 2491523193 - 2¹² = 2491519097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2491523393) 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, 415253863 + ... + 415253868.

It is an arithmetic number, because the mean of its divisors is an integer number (830507732).

Almost surely, 2^2491523193 is an apocalyptic number.

It is an amenable number.

2491523193 is a deficient number, since it is larger than the sum of its proper divisors (830507735).

2491523193 is an equidigital number, since it uses as much as digits as its factorization.

2491523193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 830507734.

The product of its digits is 58320, while the sum is 39.

The square root of 2491523193 is about 49915.1599516620. The cubic root of 2491523193 is about 1355.6730983149.

The spelling of 2491523193 in words is "two billion, four hundred ninety-one million, five hundred twenty-three thousand, one hundred ninety-three".