161769488 has 60 divisors (see below), whose sum is σ = 335841600. Its totient is φ = 75341376.

The previous prime is 161769479. The next prime is 161769497. The reversal of 161769488 is 884967161.

It is an interprime number because it is at equal distance from previous prime (161769479) and next prime (161769497).

Its product of digits (580608) is a multiple of the sum of its prime factors (324).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 812813 + ... + 813011.

It is an arithmetic number, because the mean of its divisors is an integer number (5597360).

Almost surely, 2^161769488 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 161769488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (167920800).

161769488 is an abundant number, since it is smaller than the sum of its proper divisors (174072112).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

161769488 is a wasteful number, since it uses less digits than its factorization.

161769488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324 (or 271 counting only the distinct ones).

The product of its digits is 580608, while the sum is 50.

The square root of 161769488 is about 12718.8634712383. The cubic root of 161769488 is about 544.8774945593.

The spelling of 161769488 in words is "one hundred sixty-one million, seven hundred sixty-nine thousand, four hundred eighty-eight".