436020161 has 4 divisors (see below), whose sum is σ = 436186800. Its totient is φ = 435853524.

The previous prime is 436020149. The next prime is 436020163. The reversal of 436020161 is 161020634.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-436020161 is a prime.

It is a super-2 number, since 2×436020161² = 380227161596931842, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (436020163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79331 + ... + 84648.

It is an arithmetic number, because the mean of its divisors is an integer number (109046700).

Almost surely, 2^436020161 is an apocalyptic number.

It is an amenable number.

436020161 is a deficient number, since it is larger than the sum of its proper divisors (166639).

436020161 is a wasteful number, since it uses less digits than its factorization.

436020161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166638.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 436020161 is about 20881.0957806337. The cubic root of 436020161 is about 758.2903403178.

Adding to 436020161 its reverse (161020634), we get a palindrome (597040795).

The spelling of 436020161 in words is "four hundred thirty-six million, twenty thousand, one hundred sixty-one".