1818124057 has 8 divisors (see below), whose sum is σ = 1906584840. Its totient is φ = 1731381120.

The previous prime is 1818124043. The next prime is 1818124069. The reversal of 1818124057 is 7504218181.

It can be written as a sum of positive squares in 4 ways, for example, as 660695616 + 1157428441 = 25704^2 + 34021^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1818124057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1818124037) 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, 427294 + ... + 431527.

It is an arithmetic number, because the mean of its divisors is an integer number (238323105).

Almost surely, 2^1818124057 is an apocalyptic number.

It is an amenable number.

1818124057 is a deficient number, since it is larger than the sum of its proper divisors (88460783).

1818124057 is an equidigital number, since it uses as much as digits as its factorization.

1818124057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 858923.

The product of its (nonzero) digits is 17920, while the sum is 37.

The square root of 1818124057 is about 42639.4659558489. The cubic root of 1818124057 is about 1220.5095195500.

The spelling of 1818124057 in words is "one billion, eight hundred eighteen million, one hundred twenty-four thousand, fifty-seven".