3620845845 has 24 divisors (see below), whose sum is σ = 6285708000. Its totient is φ = 1928171616.

The previous prime is 3620845841. The next prime is 3620845853. The reversal of 3620845845 is 5485480263.

3620845845 is a `hidden beast` number, since 3 + 62 + 0 + 8 + 4 + 584 + 5 = 666.

It is not a de Polignac number, because 3620845845 - 2² = 3620845841 is a prime.

It is a super-2 number, since 2×3620845845² = 26221049266507528050, which contains 22 as substring.

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

It is a self number, because there is not a number n which added to its sum of digits gives 3620845845.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3620845841) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31395 + ... + 90704.

It is an arithmetic number, because the mean of its divisors is an integer number (261904500).

Almost surely, 2^3620845845 is an apocalyptic number.

It is an amenable number.

3620845845 is a deficient number, since it is larger than the sum of its proper divisors (2664862155).

3620845845 is a wasteful number, since it uses less digits than its factorization.

3620845845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122769 (or 122766 counting only the distinct ones).

The product of its (nonzero) digits is 921600, while the sum is 45.

The square root of 3620845845 is about 60173.4646251984. The cubic root of 3620845845 is about 1535.5713894536.

The spelling of 3620845845 in words is "three billion, six hundred twenty million, eight hundred forty-five thousand, eight hundred forty-five".