1001002099949 has 2 divisors, whose sum is σ = 1001002099950. Its totient is φ = 1001002099948.

The previous prime is 1001002099921. The next prime is 1001002100009. The reversal of 1001002099949 is 9499902001001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1000660108900 + 341991049 = 1000330^2 + 18493^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1001002099949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1001002096949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500501049974 + 500501049975.

It is an arithmetic number, because the mean of its divisors is an integer number (500501049975).

Almost surely, 2^{1001002099949} is an apocalyptic number.

It is an amenable number.

1001002099949 is a deficient number, since it is larger than the sum of its proper divisors (1).

1001002099949 is an equidigital number, since it uses as much as digits as its factorization.

1001002099949 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 52488, while the sum is 44.

The spelling of 1001002099949 in words is "one trillion, one billion, two million, ninety-nine thousand, nine hundred forty-nine".