30019999973 has 2 divisors, whose sum is σ = 30019999974. Its totient is φ = 30019999972.

The previous prime is 30019999969. The next prime is 30019999979. The reversal of 30019999973 is 37999991003.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20119152964 + 9900847009 = 141842^2 + 99503^2 .

It is a cyclic number.

It is not a de Polignac number, because 30019999973 - 2² = 30019999969 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30019999979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15009999986 + 15009999987.

It is an arithmetic number, because the mean of its divisors is an integer number (15009999987).

Almost surely, 2^30019999973 is an apocalyptic number.

It is an amenable number.

30019999973 is a deficient number, since it is larger than the sum of its proper divisors (1).

30019999973 is an equidigital number, since it uses as much as digits as its factorization.

30019999973 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3720087, while the sum is 59.

The spelling of 30019999973 in words is "thirty billion, nineteen million, nine hundred ninety-nine thousand, nine hundred seventy-three".