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163242151 = 1619100829
BaseRepresentation
bin10011011101011…
…10000010100111
3102101011120010121
421232232002213
5313242222101
624110502411
74021351432
oct1156560247
9371146117
10163242151
1184167276
1246804a07
1327a873b7
1417974819
15e4e80a1
hex9bae0a7

163242151 has 4 divisors (see below), whose sum is σ = 163344600. Its totient is φ = 163139704.

The previous prime is 163242133. The next prime is 163242181. The reversal of 163242151 is 151242361.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 151242361 = 679122271.

It is a cyclic number.

It is not a de Polignac number, because 163242151 - 25 = 163242119 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 (163242181) 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, 48796 + ... + 52033.

It is an arithmetic number, because the mean of its divisors is an integer number (40836150).

Almost surely, 2163242151 is an apocalyptic number.

163242151 is a deficient number, since it is larger than the sum of its proper divisors (102449).

163242151 is a wasteful number, since it uses less digits than its factorization.

163242151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102448.

The product of its digits is 1440, while the sum is 25.

The square root of 163242151 is about 12776.6251803831. The cubic root of 163242151 is about 546.5259270273.

The spelling of 163242151 in words is "one hundred sixty-three million, two hundred forty-two thousand, one hundred fifty-one".

Divisors: 1 1619 100829 163242151