1901838900 has 72 divisors (see below), whose sum is σ = 5925947104. Its totient is φ = 468144000.

The previous prime is 1901838893. The next prime is 1901838923. The reversal of 1901838900 is 98381091.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 239926 + ... + 247725.

Almost surely, 2^1901838900 is an apocalyptic number.

1901838900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1901838900 is an abundant number, since it is smaller than the sum of its proper divisors (4024108204).

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

1901838900 is a wasteful number, since it uses less digits than its factorization.

1901838900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 487681 (or 487674 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 39.

The square root of 1901838900 is about 43610.0779637001. The cubic root of 1901838900 is about 1238.9617783810.

The spelling of 1901838900 in words is "one billion, nine hundred one million, eight hundred thirty-eight thousand, nine hundred".