161267895 has 32 divisors (see below), whose sum is σ = 287539200. Its totient is φ = 85757472.

The previous prime is 161267893. The next prime is 161267963. The reversal of 161267895 is 598762161.

161267895 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 161267895 - 2¹ = 161267893 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 161267895.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161267891) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 50146 + ... + 53264.

It is an arithmetic number, because the mean of its divisors is an integer number (8985600).

Almost surely, 2^161267895 is an apocalyptic number.

161267895 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

161267895 is a deficient number, since it is larger than the sum of its proper divisors (126271305).

161267895 is a wasteful number, since it uses less digits than its factorization.

161267895 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3516 (or 3510 counting only the distinct ones).

The product of its digits is 181440, while the sum is 45.

The square root of 161267895 is about 12699.1296945893. The cubic root of 161267895 is about 544.3137506262.

The spelling of 161267895 in words is "one hundred sixty-one million, two hundred sixty-seven thousand, eight hundred ninety-five".