102030205949 has 6 divisors (see below), whose sum is σ = 118688198814. Its totient is φ = 87454462200.

The previous prime is 102030205931. The next prime is 102030205951. The reversal of 102030205949 is 949502030201.

It can be written as a sum of positive squares in only one way, i.e., 78204122500 + 23826083449 = 279650^2 + 154357^2 .

It is not a de Polignac number, because 102030205949 - 2²⁴ = 102013428733 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102030205649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1041124502 + ... + 1041124599.

It is an arithmetic number, because the mean of its divisors is an integer number (19781366469).

Almost surely, 2^102030205949 is an apocalyptic number.

It is an amenable number.

102030205949 is a deficient number, since it is larger than the sum of its proper divisors (16657992865).

102030205949 is an equidigital number, since it uses as much as digits as its factorization.

102030205949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2082249115 (or 2082249108 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 35.

The spelling of 102030205949 in words is "one hundred two billion, thirty million, two hundred five thousand, nine hundred forty-nine".