159438187469 has 24 divisors (see below), whose sum is σ = 183708702432. Its totient is φ = 137210482080.

The previous prime is 159438187463. The next prime is 159438187471. The reversal of 159438187469 is 964781834951.

It is a de Polignac number, because none of the positive numbers 2^k-159438187469 is a prime.

It is a super-2 number, since 2×159438187469² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (159438187463) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5437562 + ... + 5466804.

It is an arithmetic number, because the mean of its divisors is an integer number (7654529268).

Almost surely, 2^159438187469 is an apocalyptic number.

159438187469 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

159438187469 is a deficient number, since it is larger than the sum of its proper divisors (24270514963).

159438187469 is a wasteful number, since it uses less digits than its factorization.

159438187469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30665 (or 30646 counting only the distinct ones).

The product of its digits is 52254720, while the sum is 65.

The spelling of 159438187469 in words is "one hundred fifty-nine billion, four hundred thirty-eight million, one hundred eighty-seven thousand, four hundred sixty-nine".