1938042650 has 24 divisors (see below), whose sum is σ = 3681460800. Its totient is φ = 758722160.

The previous prime is 1938042643. The next prime is 1938042661. The reversal of 1938042650 is 562408391.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 410000 + ... + 414699.

It is an arithmetic number, because the mean of its divisors is an integer number (153394200).

Almost surely, 2^1938042650 is an apocalyptic number.

1938042650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1938042650 is a deficient number, since it is larger than the sum of its proper divisors (1743418150).

1938042650 is a wasteful number, since it uses less digits than its factorization.

1938042650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 824758 (or 824753 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 1938042650 is about 44023.2058123894. The cubic root of 1938042650 is about 1246.7741140896.

The spelling of 1938042650 in words is "one billion, nine hundred thirty-eight million, forty-two thousand, six hundred fifty".