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2013255049 = 13154865773
BaseRepresentation
bin111011111111111…
…1101010110001001
312012022021221201211
41313333331112021
513110343130144
6531435013121
7100614246151
oct16777752611
95168257654
102013255049
11943480353
1248229a1a1
132611386a0
14151549761
15bbb30034
hex77ffd589

2013255049 has 4 divisors (see below), whose sum is σ = 2168120836. Its totient is φ = 1858389264.

The previous prime is 2013255043. The next prime is 2013255077. The reversal of 2013255049 is 9405523102.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 381499024 + 1631756025 = 19532^2 + 40395^2 .

It is a cyclic number.

It is not a de Polignac number, because 2013255049 - 217 = 2013123977 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2013255049.

It is not an unprimeable number, because it can be changed into a prime (2013255043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77432874 + ... + 77432899.

It is an arithmetic number, because the mean of its divisors is an integer number (542030209).

Almost surely, 22013255049 is an apocalyptic number.

It is an amenable number.

2013255049 is a deficient number, since it is larger than the sum of its proper divisors (154865787).

2013255049 is a wasteful number, since it uses less digits than its factorization.

2013255049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154865786.

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 2013255049 is about 44869.3107702804. The cubic root of 2013255049 is about 1262.6983093250.

The spelling of 2013255049 in words is "two billion, thirteen million, two hundred fifty-five thousand, forty-nine".

Divisors: 1 13 154865773 2013255049