18197127000 has 384 divisors, whose sum is σ = 67796688960. Its totient is φ = 4373913600.

The previous prime is 18197126999. The next prime is 18197127001. The reversal of 18197127000 is 72179181.

It is an interprime number because it is at equal distance from previous prime (18197126999) and next prime (18197127001).

It is a super-2 number, since 2×18197127000² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18197127001) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 5029192 + ... + 5032808.

Almost surely, 2^18197127000 is an apocalyptic number.

18197127000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18197127000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33898344480).

18197127000 is an abundant number, since it is smaller than the sum of its proper divisors (49599561960).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18197127000 is a wasteful number, since it uses less digits than its factorization.

18197127000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3700 (or 3683 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 36.

The spelling of 18197127000 in words is "eighteen billion, one hundred ninety-seven million, one hundred twenty-seven thousand".