1028711739949 has 4 divisors (see below), whose sum is σ = 1028714204700. Its totient is φ = 1028709275200.

The previous prime is 1028711739941. The next prime is 1028711739953. The reversal of 1028711739949 is 9499371178201.

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 661497555625 + 367214184324 = 813325^2 + 605982^2 .

It is a cyclic number.

It is not a de Polignac number, because 1028711739949 - 2³ = 1028711739941 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1028711739941) 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, 433852 + ... + 1498549.

It is an arithmetic number, because the mean of its divisors is an integer number (257178551175).

Almost surely, 2^{1028711739949} is an apocalyptic number.

It is an amenable number.

1028711739949 is a deficient number, since it is larger than the sum of its proper divisors (2464751).

1028711739949 is an equidigital number, since it uses as much as digits as its factorization.

1028711739949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2464750.

The product of its (nonzero) digits is 6858432, while the sum is 61.

The spelling of 1028711739949 in words is "one trillion, twenty-eight billion, seven hundred eleven million, seven hundred thirty-nine thousand, nine hundred forty-nine".