1418135666 has 4 divisors (see below), whose sum is σ = 2127203502. Its totient is φ = 709067832.

The previous prime is 1418135651. The next prime is 1418135687. The reversal of 1418135666 is 6665318141.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6665318141 = 401 ⋅16621741.

It can be written as a sum of positive squares in only one way, i.e., 1280566225 + 137569441 = 35785^2 + 11729^2 .

It is a super-2 number, since 2×1418135666² = 4022217534362527112, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 354533915 + ... + 354533918.

Almost surely, 2^1418135666 is an apocalyptic number.

1418135666 is a deficient number, since it is larger than the sum of its proper divisors (709067836).

1418135666 is an equidigital number, since it uses as much as digits as its factorization.

1418135666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 709067835.

The product of its digits is 103680, while the sum is 41.

The square root of 1418135666 is about 37658.1420943732. The cubic root of 1418135666 is about 1123.4987490931.

The spelling of 1418135666 in words is "one billion, four hundred eighteen million, one hundred thirty-five thousand, six hundred sixty-six".