1995463901 has 4 divisors (see below), whose sum is σ = 2002274652. Its totient is φ = 1988653152.

The previous prime is 1995463879. The next prime is 1995463937. The reversal of 1995463901 is 1093645991.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1093645991 = 10973 ⋅99667.

It can be written as a sum of positive squares in 2 ways, for example, as 1743480025 + 251983876 = 41755^2 + 15874^2 .

It is a cyclic number.

It is not a de Polignac number, because 1995463901 - 2¹⁰ = 1995462877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1995463501) by changing a digit.

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, 3404936 + ... + 3405521.

It is an arithmetic number, because the mean of its divisors is an integer number (500568663).

Almost surely, 2^1995463901 is an apocalyptic number.

It is an amenable number.

1995463901 is a deficient number, since it is larger than the sum of its proper divisors (6810751).

1995463901 is an equidigital number, since it uses as much as digits as its factorization.

1995463901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6810750.

The product of its (nonzero) digits is 262440, while the sum is 47.

The square root of 1995463901 is about 44670.6156326505. The cubic root of 1995463901 is about 1258.9678077620.

The spelling of 1995463901 in words is "one billion, nine hundred ninety-five million, four hundred sixty-three thousand, nine hundred one".