18257235514 has 8 divisors (see below), whose sum is σ = 31298118048. Its totient is φ = 7824529500.

The previous prime is 18257235499. The next prime is 18257235517. The reversal of 18257235514 is 41553275281.

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

It is a super-4 number, since 4×18257235514⁴ (a number of 42 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (18257235517) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 652044112 + ... + 652044139.

It is an arithmetic number, because the mean of its divisors is an integer number (3912264756).

Almost surely, 2^18257235514 is an apocalyptic number.

18257235514 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

18257235514 is a deficient number, since it is larger than the sum of its proper divisors (13040882534).

18257235514 is a wasteful number, since it uses less digits than its factorization.

18257235514 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1304088260.

The product of its digits is 336000, while the sum is 43.

The spelling of 18257235514 in words is "eighteen billion, two hundred fifty-seven million, two hundred thirty-five thousand, five hundred fourteen".