1622536818 has 32 divisors (see below), whose sum is σ = 3716444160. Its totient is φ = 462608400.

The previous prime is 1622536793. The next prime is 1622536837. The reversal of 1622536818 is 8186352261.

1622536818 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 1622536818.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20208 + ... + 60443.

It is an arithmetic number, because the mean of its divisors is an integer number (116138880).

Almost surely, 2^1622536818 is an apocalyptic number.

1622536818 is an abundant number, since it is smaller than the sum of its proper divisors (2093907342).

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

1622536818 is a wasteful number, since it uses less digits than its factorization.

1622536818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81142.

The product of its digits is 138240, while the sum is 42.

The square root of 1622536818 is about 40280.7251424301. The cubic root of 1622536818 is about 1175.0730162563.

It can be divided in two parts, 162253 and 6818, that added together give a triangular number (169071 = T₅₈₁).

The spelling of 1622536818 in words is "one billion, six hundred twenty-two million, five hundred thirty-six thousand, eight hundred eighteen".