8161332437 has 8 divisors (see below), whose sum is σ = 8336393856. Its totient is φ = 7986330112.

The previous prime is 8161332427. The next prime is 8161332467. The reversal of 8161332437 is 7342331618.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8161332437 - 2¹⁰ = 8161331413 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8161332437.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8161332427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 371093 + ... + 392469.

It is an arithmetic number, because the mean of its divisors is an integer number (1042049232).

Almost surely, 2^8161332437 is an apocalyptic number.

It is an amenable number.

8161332437 is a deficient number, since it is larger than the sum of its proper divisors (175061419).

8161332437 is a wasteful number, since it uses less digits than its factorization.

8161332437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29547.

The product of its digits is 72576, while the sum is 38.

The square root of 8161332437 is about 90340.0931868016. The cubic root of 8161332437 is about 2013.3549933315.

The spelling of 8161332437 in words is "eight billion, one hundred sixty-one million, three hundred thirty-two thousand, four hundred thirty-seven".