161012436 has 24 divisors (see below), whose sum is σ = 404595744. Its totient is φ = 49542240.

The previous prime is 161012413. The next prime is 161012461. The reversal of 161012436 is 634210161.

161012436 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 515910 + ... + 516221.

It is an arithmetic number, because the mean of its divisors is an integer number (16858156).

Almost surely, 2^161012436 is an apocalyptic number.

It is an amenable number.

161012436 is an abundant number, since it is smaller than the sum of its proper divisors (243583308).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

161012436 is a wasteful number, since it uses less digits than its factorization.

161012436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1032151 (or 1032149 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 161012436 is about 12689.0675780374. The cubic root of 161012436 is about 544.0261890867.

Adding to 161012436 its reverse (634210161), we get a palindrome (795222597).

The spelling of 161012436 in words is "one hundred sixty-one million, twelve thousand, four hundred thirty-six".