3616021618 has 128 divisors (see below), whose sum is σ = 6760765440. Its totient is φ = 1431198720.

The previous prime is 3616021603. The next prime is 3616021621. The reversal of 3616021618 is 8161206163.

It is a happy number.

It is a super-2 number, since 2×3616021618² = 26151224683686675848, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 35106955 + ... + 35107057.

It is an arithmetic number, because the mean of its divisors is an integer number (52818480).

Almost surely, 2^3616021618 is an apocalyptic number.

3616021618 is a deficient number, since it is larger than the sum of its proper divisors (3144743822).

3616021618 is a wasteful number, since it uses less digits than its factorization.

3616021618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 3616021618 is about 60133.3652642192. The cubic root of 3616021618 is about 1534.8891144918.

The spelling of 3616021618 in words is "three billion, six hundred sixteen million, twenty-one thousand, six hundred eighteen".