161004735 has 24 divisors (see below), whose sum is σ = 279864000. Its totient is φ = 85626432.

The previous prime is 161004733. The next prime is 161004737. The reversal of 161004735 is 537400161.

161004735 is a `hidden beast` number, since 1 + 610 + 0 + 47 + 3 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (161004733) and next prime (161004737).

It is not a de Polignac number, because 161004735 - 2¹ = 161004733 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 161004699 and 161004708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161004733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11641 + ... + 21389.

It is an arithmetic number, because the mean of its divisors is an integer number (11661000).

Almost surely, 2^161004735 is an apocalyptic number.

161004735 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

161004735 is a deficient number, since it is larger than the sum of its proper divisors (118859265).

161004735 is a wasteful number, since it uses less digits than its factorization.

161004735 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10127 (or 10124 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 161004735 is about 12688.7641242164. The cubic root of 161004735 is about 544.0175156107.

Adding to 161004735 its reverse (537400161), we get a palindrome (698404896).

The spelling of 161004735 in words is "one hundred sixty-one million, four thousand, seven hundred thirty-five".