1049494879549 has 2 divisors, whose sum is σ = 1049494879550. Its totient is φ = 1049494879548.

The previous prime is 1049494879529. The next prime is 1049494879597. The reversal of 1049494879549 is 9459784949401.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 735494912100 + 313999967449 = 857610^2 + 560357^2 .

It is a cyclic number.

It is not a de Polignac number, because 1049494879549 - 2²¹ = 1049492782397 is a prime.

It is a super-2 number, since 2×1049494879549² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1049494879529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 524747439774 + 524747439775.

It is an arithmetic number, because the mean of its divisors is an integer number (524747439775).

Almost surely, 2^{1049494879549} is an apocalyptic number.

It is an amenable number.

1049494879549 is a deficient number, since it is larger than the sum of its proper divisors (1).

1049494879549 is an equidigital number, since it uses as much as digits as its factorization.

1049494879549 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 470292480, while the sum is 73.

The spelling of 1049494879549 in words is "one trillion, forty-nine billion, four hundred ninety-four million, eight hundred seventy-nine thousand, five hundred forty-nine".