1198780047 has 32 divisors (see below), whose sum is σ = 1843564800. Its totient is φ = 768960864.

The previous prime is 1198780019. The next prime is 1198780061. The reversal of 1198780047 is 7400878911.

It is not a de Polignac number, because 1198780047 - 2¹⁴ = 1198763663 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1198779984 and 1198780011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1198780067) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 237888 + ... + 242874.

It is an arithmetic number, because the mean of its divisors is an integer number (57611400).

Almost surely, 2^1198780047 is an apocalyptic number.

1198780047 is a deficient number, since it is larger than the sum of its proper divisors (644784753).

1198780047 is a wasteful number, since it uses less digits than its factorization.

1198780047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5332 (or 5326 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 45.

The square root of 1198780047 is about 34623.4031689550. The cubic root of 1198780047 is about 1062.2983377731.

The spelling of 1198780047 in words is "one billion, one hundred ninety-eight million, seven hundred eighty thousand, forty-seven".