7380642645 has 24 divisors (see below), whose sum is σ = 13266935136. Its totient is φ = 3936342096.

The previous prime is 7380642637. The next prime is 7380642811. The reversal of 7380642645 is 5462460837.

7380642645 is a `hidden beast` number, since 7 + 380 + 6 + 4 + 264 + 5 = 666.

It is not a de Polignac number, because 7380642645 - 2³ = 7380642637 is a prime.

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 7380642645.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3036087 + ... + 3038516.

It is an arithmetic number, because the mean of its divisors is an integer number (552788964).

Almost surely, 2^7380642645 is an apocalyptic number.

It is an amenable number.

7380642645 is a deficient number, since it is larger than the sum of its proper divisors (5886292491).

7380642645 is an equidigital number, since it uses as much as digits as its factorization.

7380642645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6074623 (or 6074611 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 45.

The square root of 7380642645 is about 85910.6666543800. Note that the first 4 decimals coincide. The cubic root of 7380642645 is about 1946.9945061704.

The spelling of 7380642645 in words is "seven billion, three hundred eighty million, six hundred forty-two thousand, six hundred forty-five".