1038990837481 has 9 divisors (see below), whose sum is σ = 1046163655173. Its totient is φ = 1031866886880.

The previous prime is 1038990837439. The next prime is 1038990837509. The reversal of 1038990837481 is 1847380998301.

The square root of 1038990837481 is 1019309.

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 27719253081 + 1011271584400 = 166491^2 + 1005620^2 .

It is not a de Polignac number, because 1038990837481 - 2²¹ = 1038988740329 is a prime.

It is a super-2 number, since 2×1038990837481² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1038990837421) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 151873621 + ... + 151880461.

Almost surely, 2^{1038990837481} is an apocalyptic number.

1038990837481 is the 1019309-th square number.

1038990837481 is the 509655-th centered octagonal number.

It is an amenable number.

1038990837481 is a deficient number, since it is larger than the sum of its proper divisors (7172817692).

1038990837481 is an frugal number, since it uses more digits than its factorization.

1038990837481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13980 (or 6990 counting only the distinct ones).

The product of its (nonzero) digits is 10450944, while the sum is 61.

The spelling of 1038990837481 in words is "one trillion, thirty-eight billion, nine hundred ninety million, eight hundred thirty-seven thousand, four hundred eighty-one".