1945161924 has 12 divisors (see below), whose sum is σ = 4538711184. Its totient is φ = 648387304.

The previous prime is 1945161857. The next prime is 1945161949. The reversal of 1945161924 is 4291615491.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81048402 + ... + 81048425.

It is an arithmetic number, because the mean of its divisors is an integer number (378225932).

Almost surely, 2^1945161924 is an apocalyptic number.

It is an amenable number.

1945161924 is an abundant number, since it is smaller than the sum of its proper divisors (2593549260).

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

1945161924 is a wasteful number, since it uses less digits than its factorization.

1945161924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162096834 (or 162096832 counting only the distinct ones).

The product of its digits is 77760, while the sum is 42.

The square root of 1945161924 is about 44103.9898875374. The cubic root of 1945161924 is about 1248.2988965010.

The spelling of 1945161924 in words is "one billion, nine hundred forty-five million, one hundred sixty-one thousand, nine hundred twenty-four".