1953810449 has 4 divisors (see below), whose sum is σ = 1956775920. Its totient is φ = 1950844980.

The previous prime is 1953810437. The next prime is 1953810487. The reversal of 1953810449 is 9440183591.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1953810449 - 2¹² = 1953806353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1953810349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1481747 + ... + 1483064.

It is an arithmetic number, because the mean of its divisors is an integer number (489193980).

Almost surely, 2^1953810449 is an apocalyptic number.

It is an amenable number.

1953810449 is a deficient number, since it is larger than the sum of its proper divisors (2965471).

1953810449 is an equidigital number, since it uses as much as digits as its factorization.

1953810449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2965470.

The product of its (nonzero) digits is 155520, while the sum is 44.

The square root of 1953810449 is about 44201.9281140540. The cubic root of 1953810449 is about 1250.1462120170.

The spelling of 1953810449 in words is "one billion, nine hundred fifty-three million, eight hundred ten thousand, four hundred forty-nine".