1222732618 has 8 divisors (see below), whose sum is σ = 1834250112. Its totient is φ = 611315916.

The previous prime is 1222732583. The next prime is 1222732619. The reversal of 1222732618 is 8162372221.

It is a happy number.

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

It is a super-2 number, since 2×1222732618² = 2990150110242267848, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1222732619) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25671 + ... + 55717.

It is an arithmetic number, because the mean of its divisors is an integer number (229281264).

Almost surely, 2^1222732618 is an apocalyptic number.

1222732618 is a deficient number, since it is larger than the sum of its proper divisors (611517494).

1222732618 is a wasteful number, since it uses less digits than its factorization.

1222732618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50396.

The product of its digits is 16128, while the sum is 34.

The square root of 1222732618 is about 34967.5938262844. The cubic root of 1222732618 is about 1069.3269176484.

The spelling of 1222732618 in words is "one billion, two hundred twenty-two million, seven hundred thirty-two thousand, six hundred eighteen".