1995319544 has 8 divisors (see below), whose sum is σ = 3741224160. Its totient is φ = 997659768.

The previous prime is 1995319537. The next prime is 1995319549. The reversal of 1995319544 is 4459135991.

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 = 1995319492 and 1995319501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1995319549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124707464 + ... + 124707479.

It is an arithmetic number, because the mean of its divisors is an integer number (467653020).

Almost surely, 2^1995319544 is an apocalyptic number.

It is an amenable number.

1995319544 is a deficient number, since it is larger than the sum of its proper divisors (1745904616).

1995319544 is a wasteful number, since it uses less digits than its factorization.

1995319544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249414949 (or 249414945 counting only the distinct ones).

The product of its digits is 874800, while the sum is 50.

The square root of 1995319544 is about 44668.9998097114. Note that the first 3 decimals coincide. The cubic root of 1995319544 is about 1258.9374480383.

The spelling of 1995319544 in words is "one billion, nine hundred ninety-five million, three hundred nineteen thousand, five hundred forty-four".