1938137018 has 32 divisors (see below), whose sum is σ = 3003974400. Its totient is φ = 937474560.

The previous prime is 1938136919. The next prime is 1938137027. The reversal of 1938137018 is 8107318391.

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 15 ways as a sum of consecutive naturals, for example, 2354555 + ... + 2355377.

It is an arithmetic number, because the mean of its divisors is an integer number (93874200).

Almost surely, 2^1938137018 is an apocalyptic number.

1938137018 is a deficient number, since it is larger than the sum of its proper divisors (1065837382).

1938137018 is a wasteful number, since it uses less digits than its factorization.

1938137018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1182.

The product of its (nonzero) digits is 36288, while the sum is 41.

The square root of 1938137018 is about 44024.2775977074. The cubic root of 1938137018 is about 1246.7943499136.

The spelling of 1938137018 in words is "one billion, nine hundred thirty-eight million, one hundred thirty-seven thousand, eighteen".