1473890693521 has 3 divisors (see below), whose sum is σ = 1473891907561. Its totient is φ = 1473889479482.

The previous prime is 1473890693507. The next prime is 1473890693567. The reversal of 1473890693521 is 1253960983741.

It is a happy number.

The square root of 1473890693521 is 1214039.

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 is not a de Polignac number, because 1473890693521 - 2¹³ = 1473890685329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1473890693591) 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, 607020 + ... + 1821058.

It is a 1-persistent number, because it is pandigital, but 2⋅1473890693521 = 2947781387042 is not.

Almost surely, 2^{1473890693521} is an apocalyptic number.

1473890693521 is the 1214039-th square number.

1473890693521 is the 607020-th centered octagonal number.

It is an amenable number.

1473890693521 is a deficient number, since it is larger than the sum of its proper divisors (1214040).

1473890693521 is an frugal number, since it uses more digits than its factorization.

1473890693521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2428078 (or 1214039 counting only the distinct ones).

The product of its (nonzero) digits is 9797760, while the sum is 58.

The spelling of 1473890693521 in words is "one trillion, four hundred seventy-three billion, eight hundred ninety million, six hundred ninety-three thousand, five hundred twenty-one".