161026089 has 16 divisors (see below), whose sum is σ = 250595328. Its totient is φ = 90056592.

The previous prime is 161026069. The next prime is 161026133. The reversal of 161026089 is 980620161.

It is not a de Polignac number, because 161026089 - 2⁹ = 161025577 is a prime.

It is not an unprimeable number, because it can be changed into a prime (161026039) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 80587 + ... + 82560.

It is an arithmetic number, because the mean of its divisors is an integer number (15662208).

Almost surely, 2^161026089 is an apocalyptic number.

It is an amenable number.

161026089 is a deficient number, since it is larger than the sum of its proper divisors (89569239).

161026089 is a wasteful number, since it uses less digits than its factorization.

161026089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163204.

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 161026089 is about 12689.6055494251. The cubic root of 161026089 is about 544.0415654965.

The spelling of 161026089 in words is "one hundred sixty-one million, twenty-six thousand, eighty-nine".