1645422104 has 16 divisors (see below), whose sum is σ = 3096308400. Its totient is φ = 819739872.

The previous prime is 1645422073. The next prime is 1645422131. The reversal of 1645422104 is 4012245461.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 369044 + ... + 373475.

It is an arithmetic number, because the mean of its divisors is an integer number (193519275).

Almost surely, 2^1645422104 is an apocalyptic number.

It is an amenable number.

1645422104 is a deficient number, since it is larger than the sum of its proper divisors (1450886296).

1645422104 is a wasteful number, since it uses less digits than its factorization.

1645422104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 742802 (or 742798 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 29.

The square root of 1645422104 is about 40563.8028789215. The cubic root of 1645422104 is about 1180.5719012691.

Adding to 1645422104 its reverse (4012245461), we get a palindrome (5657667565).

The spelling of 1645422104 in words is "one billion, six hundred forty-five million, four hundred twenty-two thousand, one hundred four".