1046561129 has 2 divisors, whose sum is σ = 1046561130. Its totient is φ = 1046561128.

The previous prime is 1046561119. The next prime is 1046561137. The reversal of 1046561129 is 9211656401.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 920515600 + 126045529 = 30340^2 + 11227^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1046561129 is a prime.

It is not a weakly prime, because it can be changed into another prime (1046561119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 523280564 + 523280565.

It is an arithmetic number, because the mean of its divisors is an integer number (523280565).

Almost surely, 2^1046561129 is an apocalyptic number.

It is an amenable number.

1046561129 is a deficient number, since it is larger than the sum of its proper divisors (1).

1046561129 is an equidigital number, since it uses as much as digits as its factorization.

1046561129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 35.

The square root of 1046561129 is about 32350.5970424040. The cubic root of 1046561129 is about 1015.2855381791.

The spelling of 1046561129 in words is "one billion, forty-six million, five hundred sixty-one thousand, one hundred twenty-nine".