1938696900 has 144 divisors (see below), whose sum is σ = 6473585664. Its totient is φ = 438779520.

The previous prime is 1938696889. The next prime is 1938696917. The reversal of 1938696900 is 96968391.

It is a super-2 number, since 2×1938696900² = 7517091340139220000, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 211819 + ... + 220781.

It is an arithmetic number, because the mean of its divisors is an integer number (44955456).

Almost surely, 2^1938696900 is an apocalyptic number.

1938696900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1938696900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3236792832).

1938696900 is an abundant number, since it is smaller than the sum of its proper divisors (4534888764).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1938696900 is a wasteful number, since it uses less digits than its factorization.

1938696900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9090 (or 9083 counting only the distinct ones).

The product of its (nonzero) digits is 629856, while the sum is 51.

The square root of 1938696900 is about 44030.6359254554. The cubic root of 1938696900 is about 1246.9143948332.

The spelling of 1938696900 in words is "one billion, nine hundred thirty-eight million, six hundred ninety-six thousand, nine hundred".