161337897 has 48 divisors (see below), whose sum is σ = 272308608. Its totient is φ = 90155520.

The previous prime is 161337859. The next prime is 161337899. The reversal of 161337897 is 798733161.

161337897 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 161337897 - 2⁶ = 161337833 is a prime.

It is not an unprimeable number, because it can be changed into a prime (161337899) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 932503 + ... + 932675.

It is an arithmetic number, because the mean of its divisors is an integer number (5673096).

Almost surely, 2^161337897 is an apocalyptic number.

It is an amenable number.

161337897 is a deficient number, since it is larger than the sum of its proper divisors (110970711).

161337897 is a wasteful number, since it uses less digits than its factorization.

161337897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 430 (or 427 counting only the distinct ones).

The product of its digits is 190512, while the sum is 45.

The square root of 161337897 is about 12701.8855686862. The cubic root of 161337897 is about 544.3924964905.

The spelling of 161337897 in words is "one hundred sixty-one million, three hundred thirty-seven thousand, eight hundred ninety-seven".