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1916362145 = 51722545437
BaseRepresentation
bin111001000111001…
…0101110110100001
311221112222021122202
41302032111312201
512411042042040
6514054142545
765326544435
oct16216256641
94845867582
101916362145
118a3811275
12455951a55
132470421c9
141427269c5
15b3391015
hex72395da1

1916362145 has 8 divisors (see below), whose sum is σ = 2434907304. Its totient is φ = 1442907904.

The previous prime is 1916362121. The next prime is 1916362163. The reversal of 1916362145 is 5412636191.

It can be written as a sum of positive squares in 4 ways, for example, as 162511504 + 1753850641 = 12748^2 + 41879^2 .

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 1916362145 - 216 = 1916296609 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1916362099 and 1916362108.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11272634 + ... + 11272803.

It is an arithmetic number, because the mean of its divisors is an integer number (304363413).

Almost surely, 21916362145 is an apocalyptic number.

It is an amenable number.

1916362145 is a deficient number, since it is larger than the sum of its proper divisors (518545159).

1916362145 is a wasteful number, since it uses less digits than its factorization.

1916362145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22545459.

The product of its digits is 38880, while the sum is 38.

The square root of 1916362145 is about 43776.2737678757. The cubic root of 1916362145 is about 1242.1075296101.

The spelling of 1916362145 in words is "one billion, nine hundred sixteen million, three hundred sixty-two thousand, one hundred forty-five".

Divisors: 1 5 17 85 22545437 112727185 383272429 1916362145