1995754249 has 4 divisors (see below), whose sum is σ = 1995996564. Its totient is φ = 1995511936.

The previous prime is 1995754231. The next prime is 1995754303. The reversal of 1995754249 is 9424575991.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1320014224 + 675740025 = 36332^2 + 25995^2 .

It is a cyclic number.

It is not a de Polignac number, because 1995754249 - 2⁵ = 1995754217 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1995754249.

It is not an unprimeable number, because it can be changed into a prime (1995754949) 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 3 ways as a sum of consecutive naturals, for example, 108352 + ... + 125425.

It is an arithmetic number, because the mean of its divisors is an integer number (498999141).

Almost surely, 2^1995754249 is an apocalyptic number.

It is an amenable number.

1995754249 is a deficient number, since it is larger than the sum of its proper divisors (242315).

1995754249 is an equidigital number, since it uses as much as digits as its factorization.

1995754249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242314.

The product of its digits is 4082400, while the sum is 55.

The square root of 1995754249 is about 44673.8653913001. The cubic root of 1995754249 is about 1259.0288664223.

The spelling of 1995754249 in words is "one billion, nine hundred ninety-five million, seven hundred fifty-four thousand, two hundred forty-nine".