161012613 has 8 divisors (see below), whose sum is σ = 217270368. Its totient is φ = 106048304.

The previous prime is 161012609. The next prime is 161012639. The reversal of 161012613 is 316210161.

161012613 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 a cyclic number.

It is not a de Polignac number, because 161012613 - 2² = 161012609 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 161012613.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161012603) 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, 323070 + ... + 323567.

It is an arithmetic number, because the mean of its divisors is an integer number (27158796).

Almost surely, 2^161012613 is an apocalyptic number.

It is an amenable number.

161012613 is a deficient number, since it is larger than the sum of its proper divisors (56257755).

161012613 is an equidigital number, since it uses as much as digits as its factorization.

161012613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 646723.

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 161012613 is about 12689.0745525432. The cubic root of 161012613 is about 544.0263884348.

Adding to 161012613 its reverse (316210161), we get a palindrome (477222774).

The spelling of 161012613 in words is "one hundred sixty-one million, twelve thousand, six hundred thirteen".