149188001 has 2 divisors, whose sum is σ = 149188002. Its totient is φ = 149188000.

The previous prime is 149187979. The next prime is 149188021. The reversal of 149188001 is 100881941.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 118374400 + 30813601 = 10880^2 + 5551^2 .

It is an emirp because it is prime and its reverse (100881941) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-149188001 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (149188021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74594000 + 74594001.

It is an arithmetic number, because the mean of its divisors is an integer number (74594001).

Almost surely, 2^149188001 is an apocalyptic number.

It is an amenable number.

149188001 is a deficient number, since it is larger than the sum of its proper divisors (1).

149188001 is an equidigital number, since it uses as much as digits as its factorization.

149188001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 32.

The square root of 149188001 is about 12214.2540091485. The cubic root of 149188001 is about 530.3687963602.

The spelling of 149188001 in words is "one hundred forty-nine million, one hundred eighty-eight thousand, one".