1838849357 has 2 divisors, whose sum is σ = 1838849358. Its totient is φ = 1838849356.

The previous prime is 1838849297. The next prime is 1838849399. The reversal of 1838849357 is 7539488381.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1398311236 + 440538121 = 37394^2 + 20989^2 .

It is an emirp because it is prime and its reverse (7539488381) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1838849357 - 2¹⁴ = 1838832973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1838845357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 919424678 + 919424679.

It is an arithmetic number, because the mean of its divisors is an integer number (919424679).

Almost surely, 2^1838849357 is an apocalyptic number.

It is an amenable number.

1838849357 is a deficient number, since it is larger than the sum of its proper divisors (1).

1838849357 is an equidigital number, since it uses as much as digits as its factorization.

1838849357 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5806080, while the sum is 56.

The square root of 1838849357 is about 42881.8068299366. The cubic root of 1838849357 is about 1225.1296504732.

The spelling of 1838849357 in words is "one billion, eight hundred thirty-eight million, eight hundred forty-nine thousand, three hundred fifty-seven".