1049177591309 has 4 divisors (see below), whose sum is σ = 1074767288700. Its totient is φ = 1023587893920.

The previous prime is 1049177591291. The next prime is 1049177591311. The reversal of 1049177591309 is 9031957719401.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 610893870409 + 438283720900 = 781597^2 + 662030^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1049177591309 is a prime.

It is a super-2 number, since 2×1049177591309² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1049177591509) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12794848634 + ... + 12794848715.

It is an arithmetic number, because the mean of its divisors is an integer number (268691822175).

Almost surely, 2^{1049177591309} is an apocalyptic number.

It is an amenable number.

1049177591309 is a deficient number, since it is larger than the sum of its proper divisors (25589697391).

1049177591309 is an equidigital number, since it uses as much as digits as its factorization.

1049177591309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25589697390.

The product of its (nonzero) digits is 2143260, while the sum is 56.

The spelling of 1049177591309 in words is "one trillion, forty-nine billion, one hundred seventy-seven million, five hundred ninety-one thousand, three hundred nine".