1854148717 has 4 divisors (see below), whose sum is σ = 1868302656. Its totient is φ = 1839994780.

The previous prime is 1854148697. The next prime is 1854148753. The reversal of 1854148717 is 7178414581.

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, and also an emirpimes, since its reverse is a distinct semiprime: 7178414581 = 13 ⋅552185737.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1854148717 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 (1854148757) 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, 7076773 + ... + 7077034.

It is an arithmetic number, because the mean of its divisors is an integer number (467075664).

Almost surely, 2^1854148717 is an apocalyptic number.

It is an amenable number.

1854148717 is a deficient number, since it is larger than the sum of its proper divisors (14153939).

1854148717 is a wasteful number, since it uses less digits than its factorization.

1854148717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14153938.

The product of its digits is 250880, while the sum is 46.

The square root of 1854148717 is about 43059.8271826537. The cubic root of 1854148717 is about 1228.5179932018.

The spelling of 1854148717 in words is "one billion, eight hundred fifty-four million, one hundred forty-eight thousand, seven hundred seventeen".