1353146621 has 12 divisors (see below), whose sum is σ = 1401095196. Its totient is φ = 1306791360.

The previous prime is 1353146521. The next prime is 1353146719. The reversal of 1353146621 is 1266413531.

It can be written as a sum of positive squares in 2 ways, for example, as 211382521 + 1141764100 = 14539^2 + 33790^2 .

It is not a de Polignac number, because 1353146621 - 2¹⁴ = 1353130237 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1353146521) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 587945 + ... + 590241.

It is an arithmetic number, because the mean of its divisors is an integer number (116757933).

Almost surely, 2^1353146621 is an apocalyptic number.

It is an amenable number.

1353146621 is a deficient number, since it is larger than the sum of its proper divisors (47948575).

1353146621 is an equidigital number, since it uses as much as digits as its factorization.

1353146621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2972 (or 2941 counting only the distinct ones).

The product of its digits is 12960, while the sum is 32.

The square root of 1353146621 is about 36785.1413073268. The cubic root of 1353146621 is about 1106.0674685550.

The spelling of 1353146621 in words is "one billion, three hundred fifty-three million, one hundred forty-six thousand, six hundred twenty-one".