1018203951072 has 96 divisors (see below), whose sum is σ = 3332303864064. Its totient is φ = 264468556800.

The previous prime is 1018203951067. The next prime is 1018203951097. The reversal of 1018203951072 is 2701593028101.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

It is a self number, because there is not a number n which added to its sum of digits gives 1018203951072.

It is a congruent number.

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, 68864629 + ... + 68879412.

It is an arithmetic number, because the mean of its divisors is an integer number (34711498584).

Almost surely, 2^{1018203951072} is an apocalyptic number.

1018203951072 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1018203951072 is an abundant number, since it is smaller than the sum of its proper divisors (2314099912992).

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

1018203951072 is a wasteful number, since it uses less digits than its factorization.

1018203951072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137744072 (or 137744064 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 39.

Adding to 1018203951072 its reverse (2701593028101), we get a palindrome (3719796979173).

The spelling of 1018203951072 in words is "one trillion, eighteen billion, two hundred three million, nine hundred fifty-one thousand, seventy-two".