214451618 has 4 divisors (see below), whose sum is σ = 321677430. Its totient is φ = 107225808.

The previous prime is 214451597. The next prime is 214451659. The reversal of 214451618 is 816154412.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 184497889 + 29953729 = 13583^2 + 5473^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53612903 + ... + 53612906.

Almost surely, 2^214451618 is an apocalyptic number.

214451618 is a deficient number, since it is larger than the sum of its proper divisors (107225812).

214451618 is a wasteful number, since it uses less digits than its factorization.

214451618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107225811.

The product of its digits is 7680, while the sum is 32.

The square root of 214451618 is about 14644.1666884804. The cubic root of 214451618 is about 598.5628734902.

The spelling of 214451618 in words is "two hundred fourteen million, four hundred fifty-one thousand, six hundred eighteen".