1218175130 has 8 divisors (see below), whose sum is σ = 2192715252. Its totient is φ = 487270048.

The previous prime is 1218175099. The next prime is 1218175141. The reversal of 1218175130 is 315718121.

1218175130 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 1125803809 + 92371321 = 33553^2 + 9611^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 1218175093 and 1218175102.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60908747 + ... + 60908766.

Almost surely, 2^1218175130 is an apocalyptic number.

1218175130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1218175130 is a deficient number, since it is larger than the sum of its proper divisors (974540122).

1218175130 is a wasteful number, since it uses less digits than its factorization.

1218175130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121817520.

The product of its (nonzero) digits is 1680, while the sum is 29.

The square root of 1218175130 is about 34902.3656791341. The cubic root of 1218175130 is about 1067.9966971193.

The spelling of 1218175130 in words is "one billion, two hundred eighteen million, one hundred seventy-five thousand, one hundred thirty".