1645563102 has 8 divisors (see below), whose sum is σ = 3291126216. Its totient is φ = 548521032.

The previous prime is 1645563089. The next prime is 1645563109. The reversal of 1645563102 is 2013655461.

It is a sphenic number, since it is the product of 3 distinct primes.

1645563102 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1645563109) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 137130253 + ... + 137130264.

It is an arithmetic number, because the mean of its divisors is an integer number (411390777).

Almost surely, 2^1645563102 is an apocalyptic number.

1645563102 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1645563102 is a wasteful number, since it uses less digits than its factorization.

1645563102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274260522.

The product of its (nonzero) digits is 21600, while the sum is 33.

The square root of 1645563102 is about 40565.5408197647. The cubic root of 1645563102 is about 1180.6056218004.

The spelling of 1645563102 in words is "one billion, six hundred forty-five million, five hundred sixty-three thousand, one hundred two".