1995638452 has 6 divisors (see below), whose sum is σ = 3492367298. Its totient is φ = 997819224.

The previous prime is 1995638443. The next prime is 1995638453. The reversal of 1995638452 is 2548365991.

It can be written as a sum of positive squares in only one way, i.e., 1677230116 + 318408336 = 40954^2 + 17844^2 .

It is a super-2 number, since 2×1995638452² = 7965145662201912608, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1995638452.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1995638453) 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 as a sum of consecutive naturals, namely, 249454803 + ... + 249454810.

Almost surely, 2^1995638452 is an apocalyptic number.

It is an amenable number.

1995638452 is a deficient number, since it is larger than the sum of its proper divisors (1496728846).

1995638452 is a wasteful number, since it uses less digits than its factorization.

1995638452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 498909617 (or 498909615 counting only the distinct ones).

The product of its digits is 2332800, while the sum is 52.

The square root of 1995638452 is about 44672.5693463002. The cubic root of 1995638452 is about 1259.0045156311.

The spelling of 1995638452 in words is "one billion, nine hundred ninety-five million, six hundred thirty-eight thousand, four hundred fifty-two".