1909201000100 has 18 divisors (see below), whose sum is σ = 4142966170434. Its totient is φ = 763680400000.

The previous prime is 1909201000079. The next prime is 1909201000121. The reversal of 1909201000100 is 10001029091.

It is an interprime number because it is at equal distance from previous prime (1909201000079) and next prime (1909201000121).

It can be written as a sum of positive squares in 3 ways, for example, as 29581936036 + 1879619064064 = 171994^2 + 1370992^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9546004901 + ... + 9546005100.

Almost surely, 2^{1909201000100} is an apocalyptic number.

1909201000100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1909201000100 is an abundant number, since it is smaller than the sum of its proper divisors (2233765170334).

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

1909201000100 is a wasteful number, since it uses less digits than its factorization.

1909201000100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19092010015 (or 19092010008 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 23.

Adding to 1909201000100 its reverse (10001029091), we get a palindrome (1919202029191).

The spelling of 1909201000100 in words is "one trillion, nine hundred nine billion, two hundred one million, one hundred", and thus it is an aban number.