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8148381093 = 323129205667
BaseRepresentation
bin1111001011010111…
…00110110110100101
3210000212121122111100
413211223212312211
5113141441143333
63424320030313
7405632045046
oct74553466645
923025548440
108148381093
113501604356
1216b4a62399
139cb1c6198
145742908cd
1532a55a213
hex1e5ae6da5

8148381093 has 12 divisors (see below), whose sum is σ = 12149557888. Its totient is φ = 5257019880.

The previous prime is 8148381089. The next prime is 8148381119. The reversal of 8148381093 is 3901838418.

8148381093 is a `hidden beast` number, since 8 + 1 + 483 + 81 + 0 + 93 = 666.

It is not a de Polignac number, because 8148381093 - 22 = 8148381089 is a prime.

It is a super-2 number, since 2×81483810932 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8148381083) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14602555 + ... + 14603112.

Almost surely, 28148381093 is an apocalyptic number.

It is an amenable number.

8148381093 is a deficient number, since it is larger than the sum of its proper divisors (4001176795).

8148381093 is a wasteful number, since it uses less digits than its factorization.

8148381093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29205704 (or 29205701 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 45.

The square root of 8148381093 is about 90268.3836844329. The cubic root of 8148381093 is about 2012.2894214708.

The spelling of 8148381093 in words is "eight billion, one hundred forty-eight million, three hundred eighty-one thousand, ninety-three".

Divisors: 1 3 9 31 93 279 29205667 87617001 262851003 905375677 2716127031 8148381093