961506149 has 2 divisors, whose sum is σ = 961506150. Its totient is φ = 961506148.

The previous prime is 961506131. The next prime is 961506157. The reversal of 961506149 is 941605169.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 674440900 + 287065249 = 25970^2 + 16943^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-961506149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (961506109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 480753074 + 480753075.

It is an arithmetic number, because the mean of its divisors is an integer number (480753075).

Almost surely, 2^961506149 is an apocalyptic number.

It is an amenable number.

961506149 is a deficient number, since it is larger than the sum of its proper divisors (1).

961506149 is an equidigital number, since it uses as much as digits as its factorization.

961506149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 58320, while the sum is 41.

The square root of 961506149 is about 31008.1626188976. The cubic root of 961506149 is about 987.0004605633. Note that the first 3 decimals are identical.

The spelling of 961506149 in words is "nine hundred sixty-one million, five hundred six thousand, one hundred forty-nine".