1516229818 has 4 divisors (see below), whose sum is σ = 2274344730. Its totient is φ = 758114908.

The previous prime is 1516229801. The next prime is 1516229831. The reversal of 1516229818 is 8189226151.

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., 1130775129 + 385454689 = 33627^2 + 19633^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 379057453 + ... + 379057456.

Almost surely, 2^1516229818 is an apocalyptic number.

1516229818 is a deficient number, since it is larger than the sum of its proper divisors (758114912).

1516229818 is an equidigital number, since it uses as much as digits as its factorization.

1516229818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 758114911.

The product of its digits is 69120, while the sum is 43.

The square root of 1516229818 is about 38938.7957954532. The cubic root of 1516229818 is about 1148.8279976625.

The spelling of 1516229818 in words is "one billion, five hundred sixteen million, two hundred twenty-nine thousand, eight hundred eighteen".