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18980297093038 = 267293483426649
BaseRepresentation
bin1000101000011001100011…
…10111011010111110101110
32111012111110112112200221211
410110030301313122332232
54441433122023434123
6104211232245545034
73666165312230251
oct424146167327656
974174415480854
1018980297093038
116058553991566
12216661311517a
13a78ab0061188
14498919187098
1522dac39db40d
hex114331ddafae

18980297093038 has 16 divisors (see below), whose sum is σ = 28993996760400. Its totient is φ = 9316598360256.

The previous prime is 18980297093033. The next prime is 18980297093059. The reversal of 18980297093038 is 83039079208981.

It is a Harshad number since it is a multiple of its sum of digits (67).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18980297093033) 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, 241674063 + ... + 241752586.

It is an arithmetic number, because the mean of its divisors is an integer number (1812124797525).

Almost surely, 218980297093038 is an apocalyptic number.

18980297093038 is a deficient number, since it is larger than the sum of its proper divisors (10013699667362).

18980297093038 is a wasteful number, since it uses less digits than its factorization.

18980297093038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 483427011.

The product of its (nonzero) digits is 47029248, while the sum is 67.

The spelling of 18980297093038 in words is "eighteen trillion, nine hundred eighty billion, two hundred ninety-seven million, ninety-three thousand, thirty-eight".

Divisors: 1 2 67 134 293 586 19631 39262 483426649 966853298 32389585483 64779170966 141644008157 283288016314 9490148546519 18980297093038