18942770650 has 24 divisors (see below), whose sum is σ = 36052942464. Its totient is φ = 7400895600.

The previous prime is 18942770633. The next prime is 18942770711. The reversal of 18942770650 is 5607724981.

It is a junction number, because it is equal to n+sod(n) for n = 18942770594 and 18942770603.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4403146 + ... + 4407445.

It is an arithmetic number, because the mean of its divisors is an integer number (1502205936).

Almost surely, 2^18942770650 is an apocalyptic number.

18942770650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18942770650 is a deficient number, since it is larger than the sum of its proper divisors (17110171814).

18942770650 is a wasteful number, since it uses less digits than its factorization.

18942770650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8810646 (or 8810641 counting only the distinct ones).

The product of its (nonzero) digits is 846720, while the sum is 49.

The spelling of 18942770650 in words is "eighteen billion, nine hundred forty-two million, seven hundred seventy thousand, six hundred fifty".