1018803572164 has 81 divisors (see below), whose sum is σ = 2203688635239. Its totient is φ = 410849080320.

The previous prime is 1018803572099. The next prime is 1018803572173. The reversal of 1018803572164 is 4612753088101.

The square root of 1018803572164 is 1009358.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 681697922500 + 337105649664 = 825650^2 + 580608^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 240225084 + ... + 240229324.

Almost surely, 2^{1018803572164} is an apocalyptic number.

1018803572164 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1018803572164 is the 1009358-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1018803572164

1018803572164 is an abundant number, since it is smaller than the sum of its proper divisors (1184885063075).

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

1018803572164 is an frugal number, since it uses more digits than its factorization.

1018803572164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8534 (or 4267 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 46.

The spelling of 1018803572164 in words is "one trillion, eighteen billion, eight hundred three million, five hundred seventy-two thousand, one hundred sixty-four".