218148147 has 84 divisors (see below), whose sum is σ = 394739136. Its totient is φ = 120022560.

The previous prime is 218148137. The next prime is 218148149. The reversal of 218148147 is 741841812.

It is not a de Polignac number, because 218148147 - 2⁷ = 218148019 is a prime.

It is a super-2 number, since 2×218148147² = 95177228079067218, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (218148149) by changing a digit.

It is a polite number, since it can be written in 83 ways as a sum of consecutive naturals, for example, 1107253 + ... + 1107449.

Almost surely, 2^218148147 is an apocalyptic number.

218148147 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

218148147 is a deficient number, since it is larger than the sum of its proper divisors (176590989).

218148147 is an equidigital number, since it uses as much as digits as its factorization.

218148147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260 (or 238 counting only the distinct ones).

The product of its digits is 14336, while the sum is 36.

The square root of 218148147 is about 14769.8390986497. The cubic root of 218148147 is about 601.9824674901.

Adding to 218148147 its reverse (741841812), we get a palindrome (959989959).

The spelling of 218148147 in words is "two hundred eighteen million, one hundred forty-eight thousand, one hundred forty-seven".