161750378 has 8 divisors (see below), whose sum is σ = 243266880. Its totient is φ = 80661420.

The previous prime is 161750339. The next prime is 161750411. The reversal of 161750378 is 873057161.

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

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 3 ways as a sum of consecutive naturals, for example, 105938 + ... + 107453.

It is an arithmetic number, because the mean of its divisors is an integer number (30408360).

Almost surely, 2^161750378 is an apocalyptic number.

161750378 is a deficient number, since it is larger than the sum of its proper divisors (81516502).

161750378 is a wasteful number, since it uses less digits than its factorization.

161750378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213772.

The product of its (nonzero) digits is 35280, while the sum is 38.

The square root of 161750378 is about 12718.1122026817. The cubic root of 161750378 is about 544.8560380636.

The spelling of 161750378 in words is "one hundred sixty-one million, seven hundred fifty thousand, three hundred seventy-eight".