2145357618 has 8 divisors (see below), whose sum is σ = 4290715248. Its totient is φ = 715119204.

The previous prime is 2145357607. The next prime is 2145357623. The reversal of 2145357618 is 8167535412.

It is a happy number.

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

2145357618 is an admirable number.

It is a super-2 number, since 2×2145357618² = 9205118618221267848, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2145357618.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 178779796 + ... + 178779807.

It is an arithmetic number, because the mean of its divisors is an integer number (536339406).

Almost surely, 2^2145357618 is an apocalyptic number.

2145357618 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2145357618 is a wasteful number, since it uses less digits than its factorization.

2145357618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 357559608.

The product of its digits is 201600, while the sum is 42.

The square root of 2145357618 is about 46318.0053326997. The cubic root of 2145357618 is about 1289.7332577495.

The spelling of 2145357618 in words is "two billion, one hundred forty-five million, three hundred fifty-seven thousand, six hundred eighteen".