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2137295669 = 13991527731
BaseRepresentation
bin111111101100100…
…1000101100110101
312111221200212110212
41333121020230311
513334121430134
6552025355205
7103651466465
oct17731105465
95457625425
102137295669
119a74a1963
124b7938b05
13280a487c2
14163bd7ba5
15c7982bce
hex7f648b35

2137295669 has 4 divisors (see below), whose sum is σ = 2138824800. Its totient is φ = 2135766540.

The previous prime is 2137295663. The next prime is 2137295681. The reversal of 2137295669 is 9665927312.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2137295669 - 220 = 2136247093 is a prime.

It is a super-2 number, since 2×21372956692 = 9136065553452315122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2137295663) 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, 762467 + ... + 765264.

It is an arithmetic number, because the mean of its divisors is an integer number (534706200).

Almost surely, 22137295669 is an apocalyptic number.

It is an amenable number.

2137295669 is a deficient number, since it is larger than the sum of its proper divisors (1529131).

2137295669 is a wasteful number, since it uses less digits than its factorization.

2137295669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1529130.

The product of its digits is 1224720, while the sum is 50.

The square root of 2137295669 is about 46230.8951784410. The cubic root of 2137295669 is about 1288.1156850957.

The spelling of 2137295669 in words is "two billion, one hundred thirty-seven million, two hundred ninety-five thousand, six hundred sixty-nine".

Divisors: 1 1399 1527731 2137295669