1948809453 has 8 divisors (see below), whose sum is σ = 2600433600. Its totient is φ = 1298195808.

The previous prime is 1948809419. The next prime is 1948809469. The reversal of 1948809453 is 3549088491.

1948809453 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1948809453 - 2¹⁸ = 1948547309 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1948809396 and 1948809405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1948809403) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 248113 + ... + 255846.

It is an arithmetic number, because the mean of its divisors is an integer number (325054200).

Almost surely, 2^1948809453 is an apocalyptic number.

It is an amenable number.

1948809453 is a deficient number, since it is larger than the sum of its proper divisors (651624147).

1948809453 is a wasteful number, since it uses less digits than its factorization.

1948809453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 505251.

The product of its (nonzero) digits is 1244160, while the sum is 51.

The square root of 1948809453 is about 44145.3219831955. The cubic root of 1948809453 is about 1249.0786710626.

The spelling of 1948809453 in words is "one billion, nine hundred forty-eight million, eight hundred nine thousand, four hundred fifty-three".