1631159 has 2 divisors, whose sum is σ = 1631160. Its totient is φ = 1631158.

The previous prime is 1631153. The next prime is 1631171. The reversal of 1631159 is 9511361.

It is a weak prime.

It is an emirp because it is prime and its reverse (9511361) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1631159 - 2⁴ = 1631143 is a prime.

It is a plaindrome in base 15.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1631153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 815579 + 815580.

It is an arithmetic number, because the mean of its divisors is an integer number (815580).

2^1631159 is an apocalyptic number.

1631159 is a deficient number, since it is larger than the sum of its proper divisors (1).

1631159 is an equidigital number, since it uses as much as digits as its factorization.

1631159 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 810, while the sum is 26.

The square root of 1631159 is about 1277.1683522543. The cubic root of 1631159 is about 117.7150791306.

The spelling of 1631159 in words is "one million, six hundred thirty-one thousand, one hundred fifty-nine".