1631729869159 has 4 divisors (see below), whose sum is σ = 1757247551416. Its totient is φ = 1506212186904.

The previous prime is 1631729869157. The next prime is 1631729869171. The reversal of 1631729869159 is 9519689271361.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1631729869159 - 2¹ = 1631729869157 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1631729869094 and 1631729869103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1631729869157) 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, 62758841109 + ... + 62758841134.

It is an arithmetic number, because the mean of its divisors is an integer number (439311887854).

Almost surely, 2^{1631729869159} is an apocalyptic number.

1631729869159 is a deficient number, since it is larger than the sum of its proper divisors (125517682257).

1631729869159 is a wasteful number, since it uses less digits than its factorization.

1631729869159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125517682256.

The product of its digits is 44089920, while the sum is 67.

The spelling of 1631729869159 in words is "one trillion, six hundred thirty-one billion, seven hundred twenty-nine million, eight hundred sixty-nine thousand, one hundred fifty-nine".