1838874357 has 18 divisors (see below), whose sum is σ = 2776664982. Its totient is φ = 1172612496.

The previous prime is 1838874353. The next prime is 1838874371. The reversal of 1838874357 is 7534788381.

It can be written as a sum of positive squares in only one way, i.e., 1317254436 + 521619921 = 36294^2 + 22839^2 .

It is not a de Polignac number, because 1838874357 - 2² = 1838874353 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1838874353) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 188358 + ... + 197879.

Almost surely, 2^1838874357 is an apocalyptic number.

It is an amenable number.

1838874357 is a deficient number, since it is larger than the sum of its proper divisors (937790625).

1838874357 is a wasteful number, since it uses less digits than its factorization.

1838874357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386289 (or 386263 counting only the distinct ones).

The product of its digits is 4515840, while the sum is 54.

The square root of 1838874357 is about 42882.0983278570. The cubic root of 1838874357 is about 1225.1352025144.

The spelling of 1838874357 in words is "one billion, eight hundred thirty-eight million, eight hundred seventy-four thousand, three hundred fifty-seven".