161012593 has 48 divisors (see below), whose sum is σ = 212198400. Its totient is φ = 119266560.

The previous prime is 161012563. The next prime is 161012603. The reversal of 161012593 is 395210161.

It is a de Polignac number, because none of the positive numbers 2^k-161012593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161012563) 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, 2267748 + ... + 2267818.

It is an arithmetic number, because the mean of its divisors is an integer number (4420800).

Almost surely, 2^161012593 is an apocalyptic number.

It is an amenable number.

161012593 is a deficient number, since it is larger than the sum of its proper divisors (51185807).

161012593 is a wasteful number, since it uses less digits than its factorization.

161012593 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190 (or 173 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 28.

The square root of 161012593 is about 12689.0737644637. The cubic root of 161012593 is about 544.0263659096.

The spelling of 161012593 in words is "one hundred sixty-one million, twelve thousand, five hundred ninety-three".