1218610386147 has 64 divisors (see below), whose sum is σ = 2145204338688. Its totient is φ = 595722816000.

The previous prime is 1218610386143. The next prime is 1218610386151. The reversal of 1218610386147 is 7416830168121.

It is an interprime number because it is at equal distance from previous prime (1218610386143) and next prime (1218610386151).

It is not a de Polignac number, because 1218610386147 - 2² = 1218610386143 is a prime.

It is a super-2 number, since 2×1218610386147² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1218610386096 and 1218610386105.

It is not an unprimeable number, because it can be changed into a prime (1218610386143) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 35211822 + ... + 35246412.

It is an arithmetic number, because the mean of its divisors is an integer number (33518817792).

Almost surely, 2^{1218610386147} is an apocalyptic number.

1218610386147 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

1218610386147 is a deficient number, since it is larger than the sum of its proper divisors (926593952541).

1218610386147 is a wasteful number, since it uses less digits than its factorization.

1218610386147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43600.

The product of its (nonzero) digits is 387072, while the sum is 48.

The spelling of 1218610386147 in words is "one trillion, two hundred eighteen billion, six hundred ten million, three hundred eighty-six thousand, one hundred forty-seven".