30732636989 has 2 divisors, whose sum is σ = 30732636990. Its totient is φ = 30732636988.

The previous prime is 30732636983. The next prime is 30732637003. The reversal of 30732636989 is 98963623703.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17170171225 + 13562465764 = 131035^2 + 116458^2 .

It is a cyclic number.

It is not a de Polignac number, because 30732636989 - 2⁸ = 30732636733 is a prime.

It is a super-2 number, since 2×30732636989² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30732636983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15366318494 + 15366318495.

It is an arithmetic number, because the mean of its divisors is an integer number (15366318495).

Almost surely, 2^30732636989 is an apocalyptic number.

It is an amenable number.

30732636989 is a deficient number, since it is larger than the sum of its proper divisors (1).

30732636989 is an equidigital number, since it uses as much as digits as its factorization.

30732636989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8817984, while the sum is 56.

The spelling of 30732636989 in words is "thirty billion, seven hundred thirty-two million, six hundred thirty-six thousand, nine hundred eighty-nine".