1049989991579 has 2 divisors, whose sum is σ = 1049989991580. Its totient is φ = 1049989991578.

The previous prime is 1049989991543. The next prime is 1049989991587. The reversal of 1049989991579 is 9751999899401.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1049989991579 - 2¹⁶ = 1049989926043 is a prime.

It is a super-2 number, since 2×1049989991579² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1049989691579) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 524994995789 + 524994995790.

It is an arithmetic number, because the mean of its divisors is an integer number (524994995790).

Almost surely, 2^{1049989991579} is an apocalyptic number.

1049989991579 is a deficient number, since it is larger than the sum of its proper divisors (1).

1049989991579 is an equidigital number, since it uses as much as digits as its factorization.

1049989991579 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 595213920, while the sum is 80.

The spelling of 1049989991579 in words is "one trillion, forty-nine billion, nine hundred eighty-nine million, nine hundred ninety-one thousand, five hundred seventy-nine".