18298657973 has 8 divisors (see below), whose sum is σ = 18365861376. Its totient is φ = 18231570000.

The previous prime is 18298657961. The next prime is 18298657991. The reversal of 18298657973 is 37975689281.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18298657973 - 2⁴ = 18298657957 is a prime.

It is a super-2 number, since 2×18298657973² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18298657903) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 295415 + ... + 351947.

It is an arithmetic number, because the mean of its divisors is an integer number (2295732672).

Almost surely, 2^18298657973 is an apocalyptic number.

It is an amenable number.

18298657973 is a deficient number, since it is larger than the sum of its proper divisors (67203403).

18298657973 is an equidigital number, since it uses as much as digits as its factorization.

18298657973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57715.

The product of its digits is 45722880, while the sum is 65.

The spelling of 18298657973 in words is "eighteen billion, two hundred ninety-eight million, six hundred fifty-seven thousand, nine hundred seventy-three".