7618861628 has 36 divisors (see below), whose sum is σ = 15536217312. Its totient is φ = 3259670400.

The previous prime is 7618861583. The next prime is 7618861637. The reversal of 7618861628 is 8261688167.

It is a super-2 number, since 2×7618861628² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 7618861628.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 83453 + ... + 149003.

It is an arithmetic number, because the mean of its divisors is an integer number (431561592).

Almost surely, 2^7618861628 is an apocalyptic number.

It is an amenable number.

7618861628 is an abundant number, since it is smaller than the sum of its proper divisors (7917355684).

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

7618861628 is a wasteful number, since it uses less digits than its factorization.

7618861628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66162 (or 66153 counting only the distinct ones).

The product of its digits is 1548288, while the sum is 53.

The square root of 7618861628 is about 87286.0906903271. The cubic root of 7618861628 is about 1967.7202817987.

The spelling of 7618861628 in words is "seven billion, six hundred eighteen million, eight hundred sixty-one thousand, six hundred twenty-eight".