1623171946 has 16 divisors (see below), whose sum is σ = 2661398208. Its totient is φ = 736333600.

The previous prime is 1623171941. The next prime is 1623171947. The reversal of 1623171946 is 6491713261.

It is a junction number, because it is equal to n+sod(n) for n = 1623171899 and 1623171908.

It is not an unprimeable number, because it can be changed into a prime (1623171941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62275 + ... + 84406.

It is an arithmetic number, because the mean of its divisors is an integer number (166337388).

Almost surely, 2^1623171946 is an apocalyptic number.

1623171946 is a deficient number, since it is larger than the sum of its proper divisors (1038226262).

1623171946 is a wasteful number, since it uses less digits than its factorization.

1623171946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147197.

The product of its digits is 54432, while the sum is 40.

The square root of 1623171946 is about 40288.6081417564. The cubic root of 1623171946 is about 1175.2263203102.

The spelling of 1623171946 in words is "one billion, six hundred twenty-three million, one hundred seventy-one thousand, nine hundred forty-six".