18870854497 has 8 divisors (see below), whose sum is σ = 20817695520. Its totient is φ = 16962564960.

The previous prime is 18870854491. The next prime is 18870854503. The reversal of 18870854497 is 79445807881.

It is an interprime number because it is at equal distance from previous prime (18870854491) and next prime (18870854503).

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

It is not a de Polignac number, because 18870854497 - 2¹⁹ = 18870330209 is a prime.

It is a super-2 number, since 2×18870854497² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18870854491) 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, 9636843 + ... + 9638800.

It is an arithmetic number, because the mean of its divisors is an integer number (2602211940).

Almost surely, 2^18870854497 is an apocalyptic number.

It is an amenable number.

18870854497 is a deficient number, since it is larger than the sum of its proper divisors (1946841023).

18870854497 is a wasteful number, since it uses less digits than its factorization.

18870854497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19275743.

The product of its (nonzero) digits is 18063360, while the sum is 61.

The spelling of 18870854497 in words is "eighteen billion, eight hundred seventy million, eight hundred fifty-four thousand, four hundred ninety-seven".