2078791249 has 4 divisors (see below), whose sum is σ = 2085562864. Its totient is φ = 2072019636.

The previous prime is 2078791237. The next prime is 2078791259. The reversal of 2078791249 is 9421978702.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9421978702 = 2 ⋅4710989351.

It is a cyclic number.

It is not a de Polignac number, because 2078791249 - 2¹⁵ = 2078758481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2078791219) 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, 3385347 + ... + 3385960.

It is an arithmetic number, because the mean of its divisors is an integer number (521390716).

Almost surely, 2^2078791249 is an apocalyptic number.

It is an amenable number.

2078791249 is a deficient number, since it is larger than the sum of its proper divisors (6771615).

2078791249 is an equidigital number, since it uses as much as digits as its factorization.

2078791249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6771614.

The product of its (nonzero) digits is 508032, while the sum is 49.

The square root of 2078791249 is about 45593.7632686752. The cubic root of 2078791249 is about 1276.2535407533.

The spelling of 2078791249 in words is "two billion, seventy-eight million, seven hundred ninety-one thousand, two hundred forty-nine".