18492423349 has 2 divisors, whose sum is σ = 18492423350. Its totient is φ = 18492423348.

The previous prime is 18492423337. The next prime is 18492423371. The reversal of 18492423349 is 94332429481.

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., 13406166225 + 5086257124 = 115785^2 + 71318^2 .

It is a cyclic number.

It is not a de Polignac number, because 18492423349 - 2¹⁹ = 18491899061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18492723349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9246211674 + 9246211675.

It is an arithmetic number, because the mean of its divisors is an integer number (9246211675).

Almost surely, 2^18492423349 is an apocalyptic number.

It is an amenable number.

18492423349 is a deficient number, since it is larger than the sum of its proper divisors (1).

18492423349 is an equidigital number, since it uses as much as digits as its factorization.

18492423349 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1492992, while the sum is 49.

The spelling of 18492423349 in words is "eighteen billion, four hundred ninety-two million, four hundred twenty-three thousand, three hundred forty-nine".