1645546353 has 16 divisors (see below), whose sum is σ = 2394322176. Its totient is φ = 996967440.

The previous prime is 1645546351. The next prime is 1645546387. The reversal of 1645546353 is 3536455461.

It is not a de Polignac number, because 1645546353 - 2¹ = 1645546351 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1645546351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 122550 + ... + 135312.

It is an arithmetic number, because the mean of its divisors is an integer number (149645136).

Almost surely, 2^1645546353 is an apocalyptic number.

It is an amenable number.

1645546353 is a deficient number, since it is larger than the sum of its proper divisors (748775823).

1645546353 is a wasteful number, since it uses less digits than its factorization.

1645546353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16684.

The product of its digits is 648000, while the sum is 42.

The square root of 1645546353 is about 40565.3343755478. The cubic root of 1645546353 is about 1180.6016162757.

The spelling of 1645546353 in words is "one billion, six hundred forty-five million, five hundred forty-six thousand, three hundred fifty-three".