151961489 has 2 divisors, whose sum is σ = 151961490. Its totient is φ = 151961488.

The previous prime is 151961471. The next prime is 151961519. The reversal of 151961489 is 984169151.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 105925264 + 46036225 = 10292^2 + 6785^2 .

It is a cyclic number.

It is not a de Polignac number, because 151961489 - 2⁸ = 151961233 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 (151961389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75980744 + 75980745.

It is an arithmetic number, because the mean of its divisors is an integer number (75980745).

Almost surely, 2^151961489 is an apocalyptic number.

It is an amenable number.

151961489 is a deficient number, since it is larger than the sum of its proper divisors (1).

151961489 is an equidigital number, since it uses as much as digits as its factorization.

151961489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 77760, while the sum is 44.

The square root of 151961489 is about 12327.2660797113. The cubic root of 151961489 is about 533.6352545269.

The spelling of 151961489 in words is "one hundred fifty-one million, nine hundred sixty-one thousand, four hundred eighty-nine".