1938801000 has 64 divisors (see below), whose sum is σ = 6049068480. Its totient is φ = 517012800.

The previous prime is 1938800971. The next prime is 1938801013. The reversal of 1938801000 is 1088391.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 320134 + ... + 326133.

It is an arithmetic number, because the mean of its divisors is an integer number (94516695).

Almost surely, 2^1938801000 is an apocalyptic number.

1938801000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1938801000 is an abundant number, since it is smaller than the sum of its proper divisors (4110267480).

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

1938801000 is a wasteful number, since it uses less digits than its factorization.

1938801000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 646291 (or 646277 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 30.

The square root of 1938801000 is about 44031.8180410485. The cubic root of 1938801000 is about 1246.9367124813.

Adding to 1938801000 its reverse (1088391), we get a palindrome (1939889391).

The spelling of 1938801000 in words is "one billion, nine hundred thirty-eight million, eight hundred one thousand".