1049641261 has 2 divisors, whose sum is σ = 1049641262. Its totient is φ = 1049641260.

The previous prime is 1049641189. The next prime is 1049641277. The reversal of 1049641261 is 1621469401.

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., 941876100 + 107765161 = 30690^2 + 10381^2 .

It is a cyclic number.

It is not a de Polignac number, because 1049641261 - 2²⁵ = 1016086829 is a prime.

It is a super-2 number, since 2×1049641261² = 2203493553587340242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1049641291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 524820630 + 524820631.

It is an arithmetic number, because the mean of its divisors is an integer number (524820631).

Almost surely, 2^1049641261 is an apocalyptic number.

It is an amenable number.

1049641261 is a deficient number, since it is larger than the sum of its proper divisors (1).

1049641261 is an equidigital number, since it uses as much as digits as its factorization.

1049641261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 1049641261 is about 32398.1675562060. The cubic root of 1049641261 is about 1016.2805909274.

The spelling of 1049641261 in words is "one billion, forty-nine million, six hundred forty-one thousand, two hundred sixty-one".