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130158845 = 526031769
BaseRepresentation
bin1111100001000…
…01000011111101
3100001220202100222
413300201003331
5231310040340
620525431125
73140221565
oct760410375
9301822328
10130158845
11675202a3
123770b4a5
1320c72b8b
1413401da5
15b6608b5
hex7c210fd

130158845 has 4 divisors (see below), whose sum is σ = 156190620. Its totient is φ = 104127072.

The previous prime is 130158841. The next prime is 130158869. The reversal of 130158845 is 548851031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 548851031 = 864763473.

It can be written as a sum of positive squares in 2 ways, for example, as 24542116 + 105616729 = 4954^2 + 10277^2 .

It is a cyclic number.

It is not a de Polignac number, because 130158845 - 22 = 130158841 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130158841) 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, 13015880 + ... + 13015889.

It is an arithmetic number, because the mean of its divisors is an integer number (39047655).

Almost surely, 2130158845 is an apocalyptic number.

It is an amenable number.

130158845 is a deficient number, since it is larger than the sum of its proper divisors (26031775).

130158845 is an equidigital number, since it uses as much as digits as its factorization.

130158845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26031774.

The product of its (nonzero) digits is 19200, while the sum is 35.

The square root of 130158845 is about 11408.7179384890. The cubic root of 130158845 is about 506.7859452458.

The spelling of 130158845 in words is "one hundred thirty million, one hundred fifty-eight thousand, eight hundred forty-five".

Divisors: 1 5 26031769 130158845