149433761 has 2 divisors, whose sum is σ = 149433762. Its totient is φ = 149433760.

The previous prime is 149433751. The next prime is 149433769. The reversal of 149433761 is 167334941.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 85673536 + 63760225 = 9256^2 + 7985^2 .

It is a cyclic number.

It is not a de Polignac number, because 149433761 - 2¹⁴ = 149417377 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (149433769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74716880 + 74716881.

It is an arithmetic number, because the mean of its divisors is an integer number (74716881).

Almost surely, 2^149433761 is an apocalyptic number.

It is an amenable number.

149433761 is a deficient number, since it is larger than the sum of its proper divisors (1).

149433761 is an equidigital number, since it uses as much as digits as its factorization.

149433761 is an evil number, because the sum of its binary digits is even.

The product of its digits is 54432, while the sum is 38.

The square root of 149433761 is about 12224.3102463902. The cubic root of 149433761 is about 530.6598651852.

The spelling of 149433761 in words is "one hundred forty-nine million, four hundred thirty-three thousand, seven hundred sixty-one".