161374897 has 8 divisors (see below), whose sum is σ = 172017000. Its totient is φ = 150860544.

The previous prime is 161374891. The next prime is 161374909. The reversal of 161374897 is 798473161.

161374897 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 998001 + 160376896 = 999^2 + 12664^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 161374897 - 2²³ = 152986289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161374891) 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, 29322 + ... + 34387.

It is an arithmetic number, because the mean of its divisors is an integer number (21502125).

Almost surely, 2^161374897 is an apocalyptic number.

161374897 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

161374897 is a deficient number, since it is larger than the sum of its proper divisors (10642103).

161374897 is a wasteful number, since it uses less digits than its factorization.

161374897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63875.

The product of its digits is 254016, while the sum is 46.

The square root of 161374897 is about 12703.3419618618. The cubic root of 161374897 is about 544.4341089142.

The spelling of 161374897 in words is "one hundred sixty-one million, three hundred seventy-four thousand, eight hundred ninety-seven".