30500749 has 2 divisors, whose sum is σ = 30500750. Its totient is φ = 30500748.

The previous prime is 30500741. The next prime is 30500773. The reversal of 30500749 is 94700503.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17791524 + 12709225 = 4218^2 + 3565^2 .

It is a cyclic number.

It is not a de Polignac number, because 30500749 - 2³ = 30500741 is a prime.

It is a super-2 number, since 2×30500749² = 1860591379122002, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30500741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15250374 + 15250375.

It is an arithmetic number, because the mean of its divisors is an integer number (15250375).

Almost surely, 2^30500749 is an apocalyptic number.

It is an amenable number.

30500749 is a deficient number, since it is larger than the sum of its proper divisors (1).

30500749 is an equidigital number, since it uses as much as digits as its factorization.

30500749 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3780, while the sum is 28.

The square root of 30500749 is about 5522.7483194511. The cubic root of 30500749 is about 312.4425460242.

The spelling of 30500749 in words is "thirty million, five hundred thousand, seven hundred forty-nine".