20001030949 has 2 divisors, whose sum is σ = 20001030950. Its totient is φ = 20001030948.

The previous prime is 20001030923. The next prime is 20001031007. The reversal of 20001030949 is 94903010002.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20001030625 + 324 = 141425^2 + 18^2 .

It is a cyclic number.

It is not a de Polignac number, because 20001030949 - 2⁷ = 20001030821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20001030919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10000515474 + 10000515475.

It is an arithmetic number, because the mean of its divisors is an integer number (10000515475).

Almost surely, 2^20001030949 is an apocalyptic number.

It is an amenable number.

20001030949 is a deficient number, since it is larger than the sum of its proper divisors (1).

20001030949 is an equidigital number, since it uses as much as digits as its factorization.

20001030949 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 28.

The spelling of 20001030949 in words is "twenty billion, one million, thirty thousand, nine hundred forty-nine".