1900099100 has 18 divisors (see below), whose sum is σ = 4123215264. Its totient is φ = 760039600.

The previous prime is 1900099087. The next prime is 1900099177. The reversal of 1900099100 is 19900091.

It is a super-2 number, since 2×1900099100² = 7220753179641620000, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9500396 + ... + 9500595.

Almost surely, 2^1900099100 is an apocalyptic number.

1900099100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1900099100 is an abundant number, since it is smaller than the sum of its proper divisors (2223116164).

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

1900099100 is a wasteful number, since it uses less digits than its factorization.

1900099100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19001005 (or 19000998 counting only the distinct ones).

The product of its (nonzero) digits is 729, while the sum is 29.

The square root of 1900099100 is about 43590.1261755458. The cubic root of 1900099100 is about 1238.5838628570.

Adding to 1900099100 its reverse (19900091), we get a palindrome (1919999191).

The spelling of 1900099100 in words is "one billion, nine hundred million, ninety-nine thousand, one hundred".