1854713957 has 4 divisors (see below), whose sum is σ = 1963814796. Its totient is φ = 1745613120.

The previous prime is 1854713947. The next prime is 1854713989. The reversal of 1854713957 is 7593174581.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1066283716 + 788430241 = 32654^2 + 28079^2 .

It is a cyclic number.

It is not a de Polignac number, because 1854713957 - 2¹⁰ = 1854712933 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 (1854713947) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54550394 + ... + 54550427.

It is an arithmetic number, because the mean of its divisors is an integer number (490953699).

Almost surely, 2^1854713957 is an apocalyptic number.

1854713957 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

1854713957 is a deficient number, since it is larger than the sum of its proper divisors (109100839).

1854713957 is a wasteful number, since it uses less digits than its factorization.

1854713957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109100838.

The product of its digits is 1058400, while the sum is 50.

The square root of 1854713957 is about 43066.3901087611. The cubic root of 1854713957 is about 1228.6428190320.

The spelling of 1854713957 in words is "one billion, eight hundred fifty-four million, seven hundred thirteen thousand, nine hundred fifty-seven".