1811948453 has 8 divisors (see below), whose sum is σ = 2104746240. Its totient is φ = 1527637680.

The previous prime is 1811948429. The next prime is 1811948459. The reversal of 1811948453 is 3548491181.

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

It is a cyclic number.

It is not a de Polignac number, because 1811948453 - 2⁶ = 1811948389 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 (1811948459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2121293 + ... + 2122146.

It is an arithmetic number, because the mean of its divisors is an integer number (263093280).

Almost surely, 2^1811948453 is an apocalyptic number.

It is an amenable number.

1811948453 is a deficient number, since it is larger than the sum of its proper divisors (292797787).

1811948453 is an equidigital number, since it uses as much as digits as its factorization.

1811948453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4243507.

The product of its digits is 138240, while the sum is 44.

The square root of 1811948453 is about 42566.9878309471. The cubic root of 1811948453 is about 1219.1260544275.

The spelling of 1811948453 in words is "one billion, eight hundred eleven million, nine hundred forty-eight thousand, four hundred fifty-three".