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18849270207 = 319719459929
BaseRepresentation
bin10001100011100000…
…010000100110111111
31210122122020010201210
4101203200100212333
5302100403121312
612354221135503
71235050103355
oct214340204677
953578203653
1018849270207
117aa2a15769
1237a06ba593
131a15174631
14cab53d7d5
15754c13e3c
hex4638109bf

18849270207 has 16 divisors (see below), whose sum is σ = 26491968000. Its totient is φ = 11888218944.

The previous prime is 18849270199. The next prime is 18849270299. The reversal of 18849270207 is 70207294881.

It is not a de Polignac number, because 18849270207 - 23 = 18849270199 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18849270007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 188982 + ... + 270947.

It is an arithmetic number, because the mean of its divisors is an integer number (1655748000).

Almost surely, 218849270207 is an apocalyptic number.

18849270207 is a deficient number, since it is larger than the sum of its proper divisors (7642697793).

18849270207 is a wasteful number, since it uses less digits than its factorization.

18849270207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 460670.

The product of its (nonzero) digits is 451584, while the sum is 48.

The spelling of 18849270207 in words is "eighteen billion, eight hundred forty-nine million, two hundred seventy thousand, two hundred seven".

Divisors: 1 3 19 57 719 2157 13661 40983 459929 1379787 8738651 26215953 330688951 992066853 6283090069 18849270207