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2139108415 = 54773124693
BaseRepresentation
bin111111110000000…
…0011010000111111
312112002002222002121
41333200003100333
513340102432130
6552132303411
7104003056453
oct17740032077
95462088077
102139108415
119a851a8a4
124b8471b67
13281231932
1416414a663
15c7bded7a
hex7f80343f

2139108415 has 16 divisors (see below), whose sum is σ = 2657478528. Its totient is φ = 1651919616.

The previous prime is 2139108409. The next prime is 2139108427. The reversal of 2139108415 is 5148019312.

It is a cyclic number.

It is not a de Polignac number, because 2139108415 - 25 = 2139108383 is a prime.

It is a super-2 number, since 2×21391084152 = 9151569622247624450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45192 + ... + 79501.

It is an arithmetic number, because the mean of its divisors is an integer number (166092408).

Almost surely, 22139108415 is an apocalyptic number.

2139108415 is a deficient number, since it is larger than the sum of its proper divisors (518370113).

2139108415 is a wasteful number, since it uses less digits than its factorization.

2139108415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124818.

The product of its (nonzero) digits is 8640, while the sum is 34.

The square root of 2139108415 is about 46250.4963757147. The cubic root of 2139108415 is about 1288.4797536942.

The spelling of 2139108415 in words is "two billion, one hundred thirty-nine million, one hundred eight thousand, four hundred fifteen".

Divisors: 1 5 47 73 235 365 3431 17155 124693 623465 5860571 9102589 29302855 45512945 427821683 2139108415