1731600161 has 4 divisors (see below), whose sum is σ = 1833459012. Its totient is φ = 1629741312.

The previous prime is 1731600119. The next prime is 1731600163. The reversal of 1731600161 is 1610061371.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1610061371 = 12373 ⋅130127.

It can be written as a sum of positive squares in 2 ways, for example, as 1565705761 + 165894400 = 39569^2 + 12880^2 .

It is not a de Polignac number, because 1731600161 - 2⁶ = 1731600097 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1731600161.

It is not an unprimeable number, because it can be changed into a prime (1731600163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50929400 + ... + 50929433.

It is an arithmetic number, because the mean of its divisors is an integer number (458364753).

Almost surely, 2^1731600161 is an apocalyptic number.

It is an amenable number.

1731600161 is a deficient number, since it is larger than the sum of its proper divisors (101858851).

1731600161 is a wasteful number, since it uses less digits than its factorization.

1731600161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101858850.

The product of its (nonzero) digits is 756, while the sum is 26.

The square root of 1731600161 is about 41612.5000570742. The cubic root of 1731600161 is about 1200.8327925153.

The spelling of 1731600161 in words is "one billion, seven hundred thirty-one million, six hundred thousand, one hundred sixty-one".