2904393645 has 128 divisors (see below), whose sum is σ = 5712768000. Its totient is φ = 1398297600.

The previous prime is 2904393643. The next prime is 2904393659. The reversal of 2904393645 is 5463934092.

It is not a de Polignac number, because 2904393645 - 2¹ = 2904393643 is a prime.

It is a super-3 number, since 3×2904393645³ (a number of 29 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2904393645.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2904393643) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 19234320 + ... + 19234470.

It is an arithmetic number, because the mean of its divisors is an integer number (44631000).

Almost surely, 2^2904393645 is an apocalyptic number.

It is an amenable number.

2904393645 is a deficient number, since it is larger than the sum of its proper divisors (2808374355).

2904393645 is a wasteful number, since it uses less digits than its factorization.

2904393645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245 (or 205 counting only the distinct ones).

The product of its (nonzero) digits is 699840, while the sum is 45.

The square root of 2904393645 is about 53892.4266015180. The cubic root of 2904393645 is about 1426.7629593043.

The spelling of 2904393645 in words is "two billion, nine hundred four million, three hundred ninety-three thousand, six hundred forty-five".