159649453 has 2 divisors, whose sum is σ = 159649454. Its totient is φ = 159649452.

The previous prime is 159649439. The next prime is 159649493. The reversal of 159649453 is 354946951.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 104919049 + 54730404 = 10243^2 + 7398^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-159649453 is a prime.

It is equal to p_8955793 and since 159649453 and 8955793 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (159649433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79824726 + 79824727.

It is an arithmetic number, because the mean of its divisors is an integer number (79824727).

Almost surely, 2^159649453 is an apocalyptic number.

It is an amenable number.

159649453 is a deficient number, since it is larger than the sum of its proper divisors (1).

159649453 is an equidigital number, since it uses as much as digits as its factorization.

159649453 is an evil number, because the sum of its binary digits is even.

The product of its digits is 583200, while the sum is 46.

The square root of 159649453 is about 12635.2464558472. The cubic root of 159649453 is about 542.4867621905.

The spelling of 159649453 in words is "one hundred fifty-nine million, six hundred forty-nine thousand, four hundred fifty-three".