161032437 has 12 divisors (see below), whose sum is σ = 233039404. Its totient is φ = 107153280.

The previous prime is 161032433. The next prime is 161032451. The reversal of 161032437 is 734230161.

161032437 is a `hidden beast` number, since 1 + 610 + 3 + 2 + 43 + 7 = 666.

161032437 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 69906321 + 91126116 = 8361^2 + 9546^2 .

It is not a de Polignac number, because 161032437 - 2² = 161032433 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 161032437.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161032433) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11668 + ... + 21405.

Almost surely, 2^161032437 is an apocalyptic number.

It is an amenable number.

161032437 is a deficient number, since it is larger than the sum of its proper divisors (72006967).

161032437 is a wasteful number, since it uses less digits than its factorization.

161032437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33620 (or 33617 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 161032437 is about 12689.8556729381. The cubic root of 161032437 is about 544.0487145047.

Adding to 161032437 its reverse (734230161), we get a palindrome (895262598).

It can be divided in two parts, 1610324 and 37, that added together give a square (1610361 = 1269²).

The spelling of 161032437 in words is "one hundred sixty-one million, thirty-two thousand, four hundred thirty-seven".