1849668938 has 8 divisors (see below), whose sum is σ = 2987926788. Its totient is φ = 853693344.

The previous prime is 1849668907. The next prime is 1849668979. The reversal of 1849668938 is 8398669481.

It can be written as a sum of positive squares in 2 ways, for example, as 1464057169 + 385611769 = 38263^2 + 19637^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35570531 + ... + 35570582.

Almost surely, 2^1849668938 is an apocalyptic number.

1849668938 is a deficient number, since it is larger than the sum of its proper divisors (1138257850).

1849668938 is a wasteful number, since it uses less digits than its factorization.

1849668938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71141128.

The product of its digits is 17915904, while the sum is 62.

The square root of 1849668938 is about 43007.7776454446. Note that the first 3 decimals coincide. The cubic root of 1849668938 is about 1227.5277944271.

The spelling of 1849668938 in words is "one billion, eight hundred forty-nine million, six hundred sixty-eight thousand, nine hundred thirty-eight".