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30485542091 = 234712989153
BaseRepresentation
bin11100011001000101…
…000111010011001011
32220200120220222220112
4130121011013103023
5444413244321331
622001014544535
72126313555314
oct343105072313
986616828815
1030485542091
1111a24325a94
125aa966814b
132b4ab57504
141692b1960b
15bd658832b
hex7191474cb

30485542091 has 4 divisors (see below), whose sum is σ = 30498533592. Its totient is φ = 30472550592.

The previous prime is 30485542079. The next prime is 30485542103. The reversal of 30485542091 is 19024558403.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (30485542079) and next prime (30485542103).

It is a cyclic number.

It is not a de Polignac number, because 30485542091 - 230 = 29411800267 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30485542691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6492230 + ... + 6496923.

It is an arithmetic number, because the mean of its divisors is an integer number (7624633398).

Almost surely, 230485542091 is an apocalyptic number.

30485542091 is a deficient number, since it is larger than the sum of its proper divisors (12991501).

30485542091 is a wasteful number, since it uses less digits than its factorization.

30485542091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12991500.

The product of its (nonzero) digits is 172800, while the sum is 41.

The spelling of 30485542091 in words is "thirty billion, four hundred eighty-five million, five hundred forty-two thousand, ninety-one".

Divisors: 1 2347 12989153 30485542091