30765893 has 2 divisors, whose sum is σ = 30765894. Its totient is φ = 30765892.

The previous prime is 30765863. The next prime is 30765947. The reversal of 30765893 is 39856703.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23020804 + 7745089 = 4798^2 + 2783^2 .

It is a cyclic number.

It is not a de Polignac number, because 30765893 - 2²⁴ = 13988677 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 30765893.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30765803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15382946 + 15382947.

It is an arithmetic number, because the mean of its divisors is an integer number (15382947).

Almost surely, 2^30765893 is an apocalyptic number.

It is an amenable number.

30765893 is a deficient number, since it is larger than the sum of its proper divisors (1).

30765893 is an equidigital number, since it uses as much as digits as its factorization.

30765893 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 136080, while the sum is 41.

The square root of 30765893 is about 5546.7010916400. The cubic root of 30765893 is about 313.3452929141.

The spelling of 30765893 in words is "thirty million, seven hundred sixty-five thousand, eight hundred ninety-three".