161128654 has 8 divisors (see below), whose sum is σ = 247313880. Its totient is φ = 78690696.

The previous prime is 161128613. The next prime is 161128657. The reversal of 161128654 is 456821161.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161128657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 936709 + ... + 936880.

It is an arithmetic number, because the mean of its divisors is an integer number (30914235).

Almost surely, 2^161128654 is an apocalyptic number.

161128654 is a deficient number, since it is larger than the sum of its proper divisors (86185226).

161128654 is a wasteful number, since it uses less digits than its factorization.

161128654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1873634.

The product of its digits is 11520, while the sum is 34.

The square root of 161128654 is about 12693.6462058780. The cubic root of 161128654 is about 544.1570494337.

The spelling of 161128654 in words is "one hundred sixty-one million, one hundred twenty-eight thousand, six hundred fifty-four".