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2137398385 = 53116078581
BaseRepresentation
bin111111101100110…
…0001110001110001
312111221220002101011
41333121201301301
513334133222020
6552031510521
7103652405113
oct17731416161
95457802334
102137398385
119a7562051
124b7988441
13280a83495
14163c233b3
15c79a335a
hex7f661c71

2137398385 has 16 divisors (see below), whose sum is σ = 2649572352. Its totient is φ = 1653537600.

The previous prime is 2137398359. The next prime is 2137398427. The reversal of 2137398385 is 5838937312.

It is not a de Polignac number, because 2137398385 - 25 = 2137398353 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 244795 + ... + 253375.

It is an arithmetic number, because the mean of its divisors is an integer number (165598272).

Almost surely, 22137398385 is an apocalyptic number.

It is an amenable number.

2137398385 is a deficient number, since it is larger than the sum of its proper divisors (512173967).

2137398385 is a wasteful number, since it uses less digits than its factorization.

2137398385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10224.

The product of its digits is 1088640, while the sum is 49.

The square root of 2137398385 is about 46232.0060672258. The cubic root of 2137398385 is about 1288.1363198903.

The spelling of 2137398385 in words is "two billion, one hundred thirty-seven million, three hundred ninety-eight thousand, three hundred eighty-five".

Divisors: 1 5 31 155 1607 8035 8581 42905 49817 249085 266011 1330055 13789667 68948335 427479677 2137398385