23418651493 has 2 divisors, whose sum is σ = 23418651494. Its totient is φ = 23418651492.

The previous prime is 23418651481. The next prime is 23418651511. The reversal of 23418651493 is 39415681432.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14957779204 + 8460872289 = 122302^2 + 91983^2 .

It is a cyclic number.

It is not a de Polignac number, because 23418651493 - 2¹⁷ = 23418520421 is a prime.

It is a super-2 number, since 2×23418651493² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23418651433) 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 as a sum of consecutive naturals, namely, 11709325746 + 11709325747.

It is an arithmetic number, because the mean of its divisors is an integer number (11709325747).

Almost surely, 2^23418651493 is an apocalyptic number.

It is an amenable number.

23418651493 is a deficient number, since it is larger than the sum of its proper divisors (1).

23418651493 is an equidigital number, since it uses as much as digits as its factorization.

23418651493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 622080, while the sum is 46.

The spelling of 23418651493 in words is "twenty-three billion, four hundred eighteen million, six hundred fifty-one thousand, four hundred ninety-three".