159172093 has 2 divisors, whose sum is σ = 159172094. Its totient is φ = 159172092.

The previous prime is 159172087. The next prime is 159172103. The reversal of 159172093 is 390271951.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 151117849 + 8054244 = 12293^2 + 2838^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-159172093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (159172043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79586046 + 79586047.

It is an arithmetic number, because the mean of its divisors is an integer number (79586047).

Almost surely, 2^159172093 is an apocalyptic number.

It is an amenable number.

159172093 is a deficient number, since it is larger than the sum of its proper divisors (1).

159172093 is an equidigital number, since it uses as much as digits as its factorization.

159172093 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17010, while the sum is 37.

The square root of 159172093 is about 12616.3422987806. The cubic root of 159172093 is about 541.9455347112.

The spelling of 159172093 in words is "one hundred fifty-nine million, one hundred seventy-two thousand, ninety-three".