161496436 has 12 divisors (see below), whose sum is σ = 285120612. Its totient is φ = 80033408.

The previous prime is 161496403. The next prime is 161496437. The reversal of 161496436 is 634694161.

It can be written as a sum of positive squares in 2 ways, for example, as 9960336 + 151536100 = 3156^2 + 12310^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161496437) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 178195 + ... + 179098.

It is an arithmetic number, because the mean of its divisors is an integer number (23760051).

Almost surely, 2^161496436 is an apocalyptic number.

It is an amenable number.

161496436 is a deficient number, since it is larger than the sum of its proper divisors (123624176).

161496436 is a wasteful number, since it uses less digits than its factorization.

161496436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 357410 (or 357408 counting only the distinct ones).

The product of its digits is 93312, while the sum is 40.

The square root of 161496436 is about 12708.1248026607. The cubic root of 161496436 is about 544.5707542319.

The spelling of 161496436 in words is "one hundred sixty-one million, four hundred ninety-six thousand, four hundred thirty-six".