1534120261 has 2 divisors, whose sum is σ = 1534120262. Its totient is φ = 1534120260.

The previous prime is 1534120223. The next prime is 1534120297. The reversal of 1534120261 is 1620214351.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1221502500 + 312617761 = 34950^2 + 17681^2 .

It is a cyclic number.

It is not a de Polignac number, because 1534120261 - 2²¹ = 1532023109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1534127261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 767060130 + 767060131.

It is an arithmetic number, because the mean of its divisors is an integer number (767060131).

Almost surely, 2^1534120261 is an apocalyptic number.

It is an amenable number.

1534120261 is a deficient number, since it is larger than the sum of its proper divisors (1).

1534120261 is an equidigital number, since it uses as much as digits as its factorization.

1534120261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 1534120261 is about 39167.8472857521. The cubic root of 1534120261 is about 1153.3287952328.

The spelling of 1534120261 in words is "one billion, five hundred thirty-four million, one hundred twenty thousand, two hundred sixty-one".