18270231357 has 8 divisors (see below), whose sum is σ = 27840352576. Its totient is φ = 10440132192.

The previous prime is 18270231281. The next prime is 18270231373. The reversal of 18270231357 is 75313207281.

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

It is not a de Polignac number, because 18270231357 - 2¹⁹ = 18269707069 is a prime.

It is a super-2 number, since 2×18270231357² (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 (18270231157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 435005488 + ... + 435005529.

It is an arithmetic number, because the mean of its divisors is an integer number (3480044072).

Almost surely, 2^18270231357 is an apocalyptic number.

It is an amenable number.

18270231357 is a deficient number, since it is larger than the sum of its proper divisors (9570121219).

18270231357 is an equidigital number, since it uses as much as digits as its factorization.

18270231357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 870011027.

The product of its (nonzero) digits is 70560, while the sum is 39.

The spelling of 18270231357 in words is "eighteen billion, two hundred seventy million, two hundred thirty-one thousand, three hundred fifty-seven".