1995042049 has 64 divisors (see below), whose sum is σ = 2750533632. Its totient is φ = 1397088000.

The previous prime is 1995042029. The next prime is 1995042053. The reversal of 1995042049 is 9402405991.

It is not a de Polignac number, because 1995042049 - 2⁹ = 1995041537 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1995041996 and 1995042014.

It is not an unprimeable number, because it can be changed into a prime (1995042019) 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 63 ways as a sum of consecutive naturals, for example, 10127019 + ... + 10127215.

It is an arithmetic number, because the mean of its divisors is an integer number (42977088).

Almost surely, 2^1995042049 is an apocalyptic number.

It is an amenable number.

1995042049 is a deficient number, since it is larger than the sum of its proper divisors (755491583).

1995042049 is a wasteful number, since it uses less digits than its factorization.

1995042049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 446.

The product of its (nonzero) digits is 116640, while the sum is 43.

The square root of 1995042049 is about 44665.8935766430. The cubic root of 1995042049 is about 1258.8790839457.

The spelling of 1995042049 in words is "one billion, nine hundred ninety-five million, forty-two thousand, forty-nine".