161610435 has 48 divisors (see below), whose sum is σ = 322533120. Its totient is φ = 73327680.

The previous prime is 161610433. The next prime is 161610437. The reversal of 161610435 is 534016161.

161610435 is a `hidden beast` number, since 1 + 6 + 1 + 610 + 43 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (161610433) and next prime (161610437).

It is not a de Polignac number, because 161610435 - 2¹ = 161610433 is a prime.

It is a super-2 number, since 2×161610435² = 52235865401778450, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 161610399 and 161610408.

It is not an unprimeable number, because it can be changed into a prime (161610433) 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, 41940 + ... + 45630.

It is an arithmetic number, because the mean of its divisors is an integer number (6719440).

Almost surely, 2^161610435 is an apocalyptic number.

161610435 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

161610435 is a deficient number, since it is larger than the sum of its proper divisors (160922685).

161610435 is a wasteful number, since it uses less digits than its factorization.

161610435 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3848 (or 3845 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 161610435 is about 12712.6092915656. The cubic root of 161610435 is about 544.6988600925.

Adding to 161610435 its reverse (534016161), we get a palindrome (695626596).

The spelling of 161610435 in words is "one hundred sixty-one million, six hundred ten thousand, four hundred thirty-five".