161001582 has 16 divisors (see below), whose sum is σ = 368003712. Its totient is φ = 46000440.

The previous prime is 161001571. The next prime is 161001593. The reversal of 161001582 is 285100161.

It is an interprime number because it is at equal distance from previous prime (161001571) and next prime (161001593).

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1916644 + ... + 1916727.

It is an arithmetic number, because the mean of its divisors is an integer number (23000232).

Almost surely, 2^161001582 is an apocalyptic number.

161001582 is an abundant number, since it is smaller than the sum of its proper divisors (207002130).

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

161001582 is a wasteful number, since it uses less digits than its factorization.

161001582 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3833383.

The product of its (nonzero) digits is 480, while the sum is 24.

The square root of 161001582 is about 12688.6398798295. The cubic root of 161001582 is about 544.0139643726.

The spelling of 161001582 in words is "one hundred sixty-one million, one thousand, five hundred eighty-two".