998518373 has 2 divisors, whose sum is σ = 998518374. Its totient is φ = 998518372.

The previous prime is 998518349. The next prime is 998518397. The reversal of 998518373 is 373815899.

It is a happy number.

998518373 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (998518349) and next prime (998518397).

It can be written as a sum of positive squares in only one way, i.e., 598438369 + 400080004 = 24463^2 + 20002^2 .

It is a cyclic number.

It is not a de Polignac number, because 998518373 - 2¹⁴ = 998501989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (998514373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499259186 + 499259187.

It is an arithmetic number, because the mean of its divisors is an integer number (499259187).

Almost surely, 2^998518373 is an apocalyptic number.

It is an amenable number.

998518373 is a deficient number, since it is larger than the sum of its proper divisors (1).

998518373 is an equidigital number, since it uses as much as digits as its factorization.

998518373 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1632960, while the sum is 53.

The square root of 998518373 is about 31599.3413380722. The cubic root of 998518373 is about 999.5058802192.

The spelling of 998518373 in words is "nine hundred ninety-eight million, five hundred eighteen thousand, three hundred seventy-three".