161822476 has 24 divisors (see below), whose sum is σ = 286866944. Its totient is φ = 79866000.

The previous prime is 161822471. The next prime is 161822489. The reversal of 161822476 is 674228161.

It is not an unprimeable number, because it can be changed into a prime (161822471) by changing a digit.

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, 215101 + ... + 215851.

Almost surely, 2^161822476 is an apocalyptic number.

It is an amenable number.

161822476 is a deficient number, since it is larger than the sum of its proper divisors (125044468).

161822476 is a wasteful number, since it uses less digits than its factorization.

161822476 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1381 (or 1379 counting only the distinct ones).

The product of its digits is 32256, while the sum is 37.

The square root of 161822476 is about 12720.9463484444. The cubic root of 161822476 is about 544.9369800598.

The spelling of 161822476 in words is "one hundred sixty-one million, eight hundred twenty-two thousand, four hundred seventy-six".