1900001100002 has 4 divisors (see below), whose sum is σ = 2850001650006. Its totient is φ = 950000550000.

The previous prime is 1900001099989. The next prime is 1900001100061. The reversal of 1900001100002 is 2000011000091.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1493672621281 + 406328478721 = 1222159^2 + 637439^2 .

It is a super-2 number, since 2×1900001100002² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1900001100002.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 475000274999 + ... + 475000275002.

Almost surely, 2^{1900001100002} is an apocalyptic number.

1900001100002 is a deficient number, since it is larger than the sum of its proper divisors (950000550004).

1900001100002 is an equidigital number, since it uses as much as digits as its factorization.

1900001100002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 950000550003.

The product of its (nonzero) digits is 18, while the sum is 14.

Adding to 1900001100002 its reverse (2000011000091), we get a palindrome (3900012100093).

The spelling of 1900001100002 in words is "one trillion, nine hundred billion, one million, one hundred thousand, two".