161150749 has 2 divisors, whose sum is σ = 161150750. Its totient is φ = 161150748.

The previous prime is 161150677. The next prime is 161150753. The reversal of 161150749 is 947051161.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 105945849 + 55204900 = 10293^2 + 7430^2 .

It is a cyclic number.

It is not a de Polignac number, because 161150749 - 2⁷ = 161150621 is a prime.

It is a super-2 number, since 2×161150749² = 51939127806522002, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161150779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80575374 + 80575375.

It is an arithmetic number, because the mean of its divisors is an integer number (80575375).

Almost surely, 2^161150749 is an apocalyptic number.

It is an amenable number.

161150749 is a deficient number, since it is larger than the sum of its proper divisors (1).

161150749 is an equidigital number, since it uses as much as digits as its factorization.

161150749 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7560, while the sum is 34.

The square root of 161150749 is about 12694.5164933526. The cubic root of 161150749 is about 544.1819210713.

The spelling of 161150749 in words is "one hundred sixty-one million, one hundred fifty thousand, seven hundred forty-nine".