23618291493 has 4 divisors (see below), whose sum is σ = 31491055328. Its totient is φ = 15745527660.

The previous prime is 23618291423. The next prime is 23618291513. The reversal of 23618291493 is 39419281632.

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 23618291493 - 2⁹ = 23618290981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23618291423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3936381913 + ... + 3936381918.

It is an arithmetic number, because the mean of its divisors is an integer number (7872763832).

Almost surely, 2^23618291493 is an apocalyptic number.

It is an amenable number.

23618291493 is a deficient number, since it is larger than the sum of its proper divisors (7872763835).

23618291493 is an equidigital number, since it uses as much as digits as its factorization.

23618291493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7872763834.

The product of its digits is 559872, while the sum is 48.

The spelling of 23618291493 in words is "twenty-three billion, six hundred eighteen million, two hundred ninety-one thousand, four hundred ninety-three".