1995747755 has 4 divisors (see below), whose sum is σ = 2394897312. Its totient is φ = 1596598200.

The previous prime is 1995747709. The next prime is 1995747769. The reversal of 1995747755 is 5577475991.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5577475991 = 17 ⋅328086823.

It is not a de Polignac number, because 1995747755 - 2¹⁶ = 1995682219 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1995747694 and 1995747703.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 199574771 + ... + 199574780.

It is an arithmetic number, because the mean of its divisors is an integer number (598724328).

Almost surely, 2^1995747755 is an apocalyptic number.

1995747755 is a deficient number, since it is larger than the sum of its proper divisors (399149557).

1995747755 is an equidigital number, since it uses as much as digits as its factorization.

1995747755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 399149556.

The product of its digits is 13891500, while the sum is 59.

The square root of 1995747755 is about 44673.7927089250. The cubic root of 1995747755 is about 1259.0275008330.

The spelling of 1995747755 in words is "one billion, nine hundred ninety-five million, seven hundred forty-seven thousand, seven hundred fifty-five".