18357495673730 has 64 divisors (see below), whose sum is σ = 35582409751680. Its totient is φ = 6793504594944.

The previous prime is 18357495673697. The next prime is 18357495673733. The reversal of 18357495673730 is 3737659475381.

It is a super-2 number, since 2×18357495673730² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18357495673733) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 198979172 + ... + 199071408.

It is an arithmetic number, because the mean of its divisors is an integer number (555975152370).

Almost surely, 2^{18357495673730} is an apocalyptic number.

18357495673730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18357495673730 is a deficient number, since it is larger than the sum of its proper divisors (17224914077950).

18357495673730 is a wasteful number, since it uses less digits than its factorization.

18357495673730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112163.

The product of its (nonzero) digits is 400075200, while the sum is 68.

The spelling of 18357495673730 in words is "eighteen trillion, three hundred fifty-seven billion, four hundred ninety-five million, six hundred seventy-three thousand, seven hundred thirty".