Search a number
-
+
2138102941 = 131213135589
BaseRepresentation
bin111111101110000…
…1101110010011101
312112000012212211211
41333130031302131
513334323243231
6552054544421
7103661401162
oct17734156235
95460185754
102138102941
119a79a3427
124b8068111
13280c6c090
14163d68069
15c7a91eb1
hex7f70dc9d

2138102941 has 8 divisors (see below), whose sum is σ = 2304487640. Its totient is φ = 1971991872.

The previous prime is 2138102933. The next prime is 2138102963. The reversal of 2138102941 is 1492018312.

It can be written as a sum of positive squares in 4 ways, for example, as 99580441 + 2038522500 = 9979^2 + 45150^2 .

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 2138102941 - 23 = 2138102933 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2138102341) 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, 52026 + ... + 83563.

It is an arithmetic number, because the mean of its divisors is an integer number (288060955).

Almost surely, 22138102941 is an apocalyptic number.

It is an amenable number.

2138102941 is a deficient number, since it is larger than the sum of its proper divisors (166384699).

2138102941 is a wasteful number, since it uses less digits than its factorization.

2138102941 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136815.

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 2138102941 is about 46239.6252255574. The cubic root of 2138102941 is about 1288.2778415453.

The spelling of 2138102941 in words is "two billion, one hundred thirty-eight million, one hundred two thousand, nine hundred forty-one".

Divisors: 1 13 1213 15769 135589 1762657 164469457 2138102941