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130874189 = 887147547
BaseRepresentation
bin1111100110011…
…11101101001101
3100010021002122012
413303033231031
5232000433224
620553031005
73146261255
oct763175515
9303232565
10130874189
1167969796
12379b5465
1321163664
141354a965
15b75280e
hex7ccfb4d

130874189 has 4 divisors (see below), whose sum is σ = 131022624. Its totient is φ = 130725756.

The previous prime is 130874153. The next prime is 130874197. The reversal of 130874189 is 981478031.

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, and also an emirpimes, since its reverse is a distinct semiprime: 981478031 = 4243231317.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-130874189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130874089) 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, 72887 + ... + 74660.

It is an arithmetic number, because the mean of its divisors is an integer number (32755656).

Almost surely, 2130874189 is an apocalyptic number.

It is an amenable number.

130874189 is a deficient number, since it is larger than the sum of its proper divisors (148435).

130874189 is an equidigital number, since it uses as much as digits as its factorization.

130874189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148434.

The product of its (nonzero) digits is 48384, while the sum is 41.

The square root of 130874189 is about 11440.0257429780. The cubic root of 130874189 is about 507.7126697309.

The spelling of 130874189 in words is "one hundred thirty million, eight hundred seventy-four thousand, one hundred eighty-nine".

Divisors: 1 887 147547 130874189