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18764852970 = 235625495099
BaseRepresentation
bin10001011110011110…
…001110111011101010
31210102202101022001110
4101132132032323222
5301412300243340
612342003531150
71233003422103
oct213636167352
953382338043
1018764852970
117a5a2a7856
123778389ab6
131a008287c6
14ca02473aa
1574c5db680
hex45e78eeea

18764852970 has 16 divisors (see below), whose sum is σ = 45035647200. Its totient is φ = 5003960784.

The previous prime is 18764852959. The next prime is 18764852971. The reversal of 18764852970 is 7925846781.

It is a self number, because there is not a number n which added to its sum of digits gives 18764852970.

It is not an unprimeable number, because it can be changed into a prime (18764852971) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 312747520 + ... + 312747579.

It is an arithmetic number, because the mean of its divisors is an integer number (2814727950).

Almost surely, 218764852970 is an apocalyptic number.

18764852970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18764852970 is an abundant number, since it is smaller than the sum of its proper divisors (26270794230).

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

18764852970 is a wasteful number, since it uses less digits than its factorization.

18764852970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 625495109.

The product of its (nonzero) digits is 6773760, while the sum is 57.

The spelling of 18764852970 in words is "eighteen billion, seven hundred sixty-four million, eight hundred fifty-two thousand, nine hundred seventy".

Divisors: 1 2 3 5 6 10 15 30 625495099 1250990198 1876485297 3127475495 3752970594 6254950990 9382426485 18764852970