18548099157 has 8 divisors (see below), whose sum is σ = 28263770176. Its totient is φ = 10598913792.

The previous prime is 18548099131. The next prime is 18548099159. The reversal of 18548099157 is 75199084581.

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

It is not a de Polignac number, because 18548099157 - 2¹⁵ = 18548066389 is a prime.

It is a super-2 number, since 2×18548099157² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18548099097 and 18548099106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18548099159) 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, 441621388 + ... + 441621429.

It is an arithmetic number, because the mean of its divisors is an integer number (3532971272).

Almost surely, 2^18548099157 is an apocalyptic number.

It is an amenable number.

18548099157 is a deficient number, since it is larger than the sum of its proper divisors (9715671019).

18548099157 is an equidigital number, since it uses as much as digits as its factorization.

18548099157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 883242827.

The product of its (nonzero) digits is 3628800, while the sum is 57.

The spelling of 18548099157 in words is "eighteen billion, five hundred forty-eight million, ninety-nine thousand, one hundred fifty-seven".