161264445 has 8 divisors (see below), whose sum is σ = 258023136. Its totient is φ = 86007696.

The previous prime is 161264443. The next prime is 161264459. The reversal of 161264445 is 544462161.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 161264445 - 2¹ = 161264443 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161264443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5375467 + ... + 5375496.

It is an arithmetic number, because the mean of its divisors is an integer number (32252892).

Almost surely, 2^161264445 is an apocalyptic number.

161264445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

161264445 is a deficient number, since it is larger than the sum of its proper divisors (96758691).

161264445 is a wasteful number, since it uses less digits than its factorization.

161264445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10750971.

The product of its digits is 23040, while the sum is 33.

The square root of 161264445 is about 12698.9938577826. The cubic root of 161264445 is about 544.3098691017.

The spelling of 161264445 in words is "one hundred sixty-one million, two hundred sixty-four thousand, four hundred forty-five".