1945633336 has 8 divisors (see below), whose sum is σ = 3648062520. Its totient is φ = 972816664.

The previous prime is 1945633331. The next prime is 1945633337. The reversal of 1945633336 is 6333365491.

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 1945633292 and 1945633301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1945633331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121602076 + ... + 121602091.

It is an arithmetic number, because the mean of its divisors is an integer number (456007815).

Almost surely, 2^1945633336 is an apocalyptic number.

It is an amenable number.

1945633336 is a deficient number, since it is larger than the sum of its proper divisors (1702429184).

1945633336 is a wasteful number, since it uses less digits than its factorization.

1945633336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243204173 (or 243204169 counting only the distinct ones).

The product of its digits is 524880, while the sum is 43.

The square root of 1945633336 is about 44109.3338875118. Note that the first 3 decimals coincide. The cubic root of 1945633336 is about 1248.3997305310.

The spelling of 1945633336 in words is "one billion, nine hundred forty-five million, six hundred thirty-three thousand, three hundred thirty-six".