161037412 has 24 divisors (see below), whose sum is σ = 285679800. Its totient is φ = 79422720.

The previous prime is 161037403. The next prime is 161037427. The reversal of 161037412 is 214730161.

It can be written as a sum of positive squares in 4 ways, for example, as 5885476 + 155151936 = 2426^2 + 12456^2 .

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 92712 + ... + 94432.

It is an arithmetic number, because the mean of its divisors is an integer number (11903325).

Almost surely, 2^161037412 is an apocalyptic number.

It is an amenable number.

161037412 is a deficient number, since it is larger than the sum of its proper divisors (124642388).

161037412 is a wasteful number, since it uses less digits than its factorization.

161037412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2031 (or 2029 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 161037412 is about 12690.0516941421. The cubic root of 161037412 is about 544.0543171326.

Adding to 161037412 its reverse (214730161), we get a palindrome (375767573).

The spelling of 161037412 in words is "one hundred sixty-one million, thirty-seven thousand, four hundred twelve".