1049731261 has 2 divisors, whose sum is σ = 1049731262. Its totient is φ = 1049731260.

The previous prime is 1049731231. The next prime is 1049731301. The reversal of 1049731261 is 1621379401.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 824551225 + 225180036 = 28715^2 + 15006^2 .

It is an emirp because it is prime and its reverse (1621379401) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1049731261 - 2²¹ = 1047634109 is a prime.

It is a super-2 number, since 2×1049731261² = 2203871440641300242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1049731211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 524865630 + 524865631.

It is an arithmetic number, because the mean of its divisors is an integer number (524865631).

Almost surely, 2^1049731261 is an apocalyptic number.

It is an amenable number.

1049731261 is a deficient number, since it is larger than the sum of its proper divisors (1).

1049731261 is an equidigital number, since it uses as much as digits as its factorization.

1049731261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 1049731261 is about 32399.5564938781. The cubic root of 1049731261 is about 1016.3096366095.

The spelling of 1049731261 in words is "one billion, forty-nine million, seven hundred thirty-one thousand, two hundred sixty-one".