1534147861 has 2 divisors, whose sum is σ = 1534147862. Its totient is φ = 1534147860.

The previous prime is 1534147841. The next prime is 1534147877. The reversal of 1534147861 is 1687414351.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1445900625 + 88247236 = 38025^2 + 9394^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1534147861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1534147841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 767073930 + 767073931.

It is an arithmetic number, because the mean of its divisors is an integer number (767073931).

Almost surely, 2^1534147861 is an apocalyptic number.

It is an amenable number.

1534147861 is a deficient number, since it is larger than the sum of its proper divisors (1).

1534147861 is an equidigital number, since it uses as much as digits as its factorization.

1534147861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 80640, while the sum is 40.

The square root of 1534147861 is about 39168.1996139726. The cubic root of 1534147861 is about 1153.3357116144.

The spelling of 1534147861 in words is "one billion, five hundred thirty-four million, one hundred forty-seven thousand, eight hundred sixty-one".