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18830029922 = 211288212
BaseRepresentation
bin10001100010010110…
…110111010001100010
31210121022000122000122
4101202112313101202
5302030441424142
612352252520242
71234424420264
oct214226672142
953538018018
1018830029922
117a93074200
123796180082
131a11198c52
14ca8b71b34
157531b31d2
hex4625b7462

18830029922 has 18 divisors (see below), whose sum is σ = 31049726337. Its totient is φ = 8558134200.

The previous prime is 18830029921. The next prime is 18830029949. The reversal of 18830029922 is 22992003881.

It can be written as a sum of positive squares in 2 ways, for example, as 18488112841 + 341917081 = 135971^2 + 18491^2 .

It is an ABA number since it can be written as A⋅BA, here for A=2, B=97031.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18830029921) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 2130272 + ... + 2139092.

Almost surely, 218830029922 is an apocalyptic number.

18830029922 is a deficient number, since it is larger than the sum of its proper divisors (12219696415).

18830029922 is an frugal number, since it uses more digits than its factorization.

18830029922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17666 (or 8834 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 44.

The spelling of 18830029922 in words is "eighteen billion, eight hundred thirty million, twenty-nine thousand, nine hundred twenty-two".

Divisors: 1 2 11 22 121 242 8821 17642 97031 194062 1067341 2134682 77810041 155620082 855910451 1711820902 9415014961 18830029922