1304511513940 has 24 divisors (see below), whose sum is σ = 2739499894152. Its totient is φ = 521799707520.

The previous prime is 1304511513931. The next prime is 1304511513941. The reversal of 1304511513940 is 493151154031.

It can be written as a sum of positive squares in 4 ways, for example, as 958922728516 + 345588785424 = 979246^2 + 587868^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1304511513940.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1304511513941) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2509362 + ... + 2984278.

It is an arithmetic number, because the mean of its divisors is an integer number (114145828923).

Almost surely, 2^{1304511513940} is an apocalyptic number.

1304511513940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1304511513940 is an abundant number, since it is smaller than the sum of its proper divisors (1434988380212).

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

1304511513940 is a wasteful number, since it uses less digits than its factorization.

1304511513940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 612267 (or 612265 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 37.

Adding to 1304511513940 its reverse (493151154031), we get a palindrome (1797662667971).

It can be divided in two parts, 130451 and 1513940, that added together give a triangular number (1644391 = T₁₈₁₃).

The spelling of 1304511513940 in words is "one trillion, three hundred four billion, five hundred eleven million, five hundred thirteen thousand, nine hundred forty".