2078791247 has 8 divisors (see below), whose sum is σ = 2286330816. Its totient is φ = 1878056352.

The previous prime is 2078791237. The next prime is 2078791259. The reversal of 2078791247 is 7421978702.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2078791247 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2078791207) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1700528 + ... + 1701749.

It is an arithmetic number, because the mean of its divisors is an integer number (285791352).

Almost surely, 2^2078791247 is an apocalyptic number.

2078791247 is a deficient number, since it is larger than the sum of its proper divisors (207539569).

2078791247 is a wasteful number, since it uses less digits than its factorization.

2078791247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3402337.

The product of its (nonzero) digits is 395136, while the sum is 47.

The square root of 2078791247 is about 45593.7632467424. The cubic root of 2078791247 is about 1276.2535403440.

The spelling of 2078791247 in words is "two billion, seventy-eight million, seven hundred ninety-one thousand, two hundred forty-seven".