149841761 has 2 divisors, whose sum is σ = 149841762. Its totient is φ = 149841760.

The previous prime is 149841751. The next prime is 149841787. The reversal of 149841761 is 167148941.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 133841761 + 16000000 = 11569^2 + 4000^2 .

It is a cyclic number.

It is not a de Polignac number, because 149841761 - 2⁶ = 149841697 is a prime.

It is a super-2 number, since 2×149841761² = 44905106679162242, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (149841721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74920880 + 74920881.

It is an arithmetic number, because the mean of its divisors is an integer number (74920881).

Almost surely, 2^149841761 is an apocalyptic number.

It is an amenable number.

149841761 is a deficient number, since it is larger than the sum of its proper divisors (1).

149841761 is an equidigital number, since it uses as much as digits as its factorization.

149841761 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48384, while the sum is 41.

The square root of 149841761 is about 12240.9869291655. The cubic root of 149841761 is about 531.1423810423.

The spelling of 149841761 in words is "one hundred forty-nine million, eight hundred forty-one thousand, seven hundred sixty-one".