1503794521849 has 3 divisors (see below), whose sum is σ = 1503795748143. Its totient is φ = 1503793295556.

The previous prime is 1503794521807. The next prime is 1503794521903. The reversal of 1503794521849 is 9481254973051.

The square root of 1503794521849 is 1226293.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 1025024629225 + 478769892624 = 1012435^2 + 691932^2 .

It is not a de Polignac number, because 1503794521849 - 2⁷ = 1503794521721 is a prime.

It is a super-2 number, since 2×1503794521849² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1503794521793 and 1503794521802.

It is not an unprimeable number, because it can be changed into a prime (1503794561849) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 613147 + ... + 1839439.

It is an arithmetic number, because the mean of its divisors is an integer number (501265249381).

Almost surely, 2^{1503794521849} is an apocalyptic number.

1503794521849 is the 1226293-rd square number.

1503794521849 is the 613147-th centered octagonal number.

It is an amenable number.

1503794521849 is a deficient number, since it is larger than the sum of its proper divisors (1226294).

1503794521849 is an frugal number, since it uses more digits than its factorization.

1503794521849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2452586 (or 1226293 counting only the distinct ones).

The product of its (nonzero) digits is 10886400, while the sum is 58.

The spelling of 1503794521849 in words is "one trillion, five hundred three billion, seven hundred ninety-four million, five hundred twenty-one thousand, eight hundred forty-nine".