445367811818 has 4 divisors (see below), whose sum is σ = 668051717730. Its totient is φ = 222683905908.

The previous prime is 445367811773. The next prime is 445367811821. The reversal of 445367811818 is 818118763544.

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., 382954281889 + 62413529929 = 618833^2 + 249827^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111341952953 + ... + 111341952956.

Almost surely, 2^445367811818 is an apocalyptic number.

445367811818 is a deficient number, since it is larger than the sum of its proper divisors (222683905912).

445367811818 is a wasteful number, since it uses less digits than its factorization.

445367811818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222683905911.

The product of its digits is 5160960, while the sum is 56.

The spelling of 445367811818 in words is "four hundred forty-five billion, three hundred sixty-seven million, eight hundred eleven thousand, eight hundred eighteen".