161037897 has 8 divisors (see below), whose sum is σ = 214778880. Its totient is φ = 107327760.

The previous prime is 161037871. The next prime is 161037911. The reversal of 161037897 is 798730161.

161037897 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 161037897 - 2⁸ = 161037641 is a prime.

It is not an unprimeable number, because it can be changed into a prime (161037817) 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, 10872 + ... + 20982.

It is an arithmetic number, because the mean of its divisors is an integer number (26847360).

Almost surely, 2^161037897 is an apocalyptic number.

It is an amenable number.

161037897 is a deficient number, since it is larger than the sum of its proper divisors (53740983).

161037897 is a wasteful number, since it uses less digits than its factorization.

161037897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15423.

The product of its (nonzero) digits is 63504, while the sum is 42.

The square root of 161037897 is about 12690.0708035850. The cubic root of 161037897 is about 544.0548633123.

The spelling of 161037897 in words is "one hundred sixty-one million, thirty-seven thousand, eight hundred ninety-seven".