161022494 has 16 divisors (see below), whose sum is σ = 260167680. Its totient is φ = 74525880.

The previous prime is 161022467. The next prime is 161022541. The reversal of 161022494 is 494220161.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55034 + ... + 57885.

It is an arithmetic number, because the mean of its divisors is an integer number (16260480).

Almost surely, 2^161022494 is an apocalyptic number.

161022494 is a deficient number, since it is larger than the sum of its proper divisors (99145186).

161022494 is a wasteful number, since it uses less digits than its factorization.

161022494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112975.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 161022494 is about 12689.4638972653. The cubic root of 161022494 is about 544.0375167862.

The spelling of 161022494 in words is "one hundred sixty-one million, twenty-two thousand, four hundred ninety-four".