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2147189349 = 31151621833
BaseRepresentation
bin111111111111011…
…1000001001100101
312112122022112001110
41333332320021211
513344140024344
6553021415233
7104131544154
oct17776701145
95478275043
102147189349
11a0203a158
124bb10a519
13282b00b56
1416525159b
15c87893b9
hex7ffb8265

2147189349 has 8 divisors (see below), whose sum is σ = 2865411072. Its totient is φ = 1430213600.

The previous prime is 2147189329. The next prime is 2147189353. The reversal of 2147189349 is 9439817412.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2147189349 - 227 = 2012971621 is a prime.

It is a super-2 number, since 2×21471893492 = 9220844200918087602, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2147189298 and 2147189307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2147189329) 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, 307464 + ... + 314369.

It is an arithmetic number, because the mean of its divisors is an integer number (358176384).

Almost surely, 22147189349 is an apocalyptic number.

It is an amenable number.

2147189349 is a deficient number, since it is larger than the sum of its proper divisors (718221723).

2147189349 is a wasteful number, since it uses less digits than its factorization.

2147189349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 622987.

The product of its digits is 435456, while the sum is 48.

The square root of 2147189349 is about 46337.7745365485. The cubic root of 2147189349 is about 1290.1002163595.

The spelling of 2147189349 in words is "two billion, one hundred forty-seven million, one hundred eighty-nine thousand, three hundred forty-nine".

Divisors: 1 3 1151 3453 621833 1865499 715729783 2147189349