1031018618440 has 48 divisors (see below), whose sum is σ = 2364387650100. Its totient is φ = 404626130688.

The previous prime is 1031018618431. The next prime is 1031018618471. The reversal of 1031018618440 is 448168101301.

It can be written as a sum of positive squares in 6 ways, for example, as 896926431844 + 134092186596 = 947062^2 + 366186^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1031018618440.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4475655 + ... + 4700374.

Almost surely, 2^{1031018618440} is an apocalyptic number.

1031018618440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1031018618440 is an abundant number, since it is smaller than the sum of its proper divisors (1333369031660).

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

1031018618440 is an equidigital number, since it uses as much as digits as its factorization.

1031018618440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9176146 (or 9176089 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 37.

The spelling of 1031018618440 in words is "one trillion, thirty-one billion, eighteen million, six hundred eighteen thousand, four hundred forty".