9472780819 has 2 divisors, whose sum is σ = 9472780820. Its totient is φ = 9472780818.

The previous prime is 9472780799. The next prime is 9472780831. The reversal of 9472780819 is 9180872749.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9472780819 - 2¹¹ = 9472778771 is a prime.

It is a super-2 number, since 2×9472780819² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 9472780819.

It is not a weakly prime, because it can be changed into another prime (9472780859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4736390409 + 4736390410.

It is an arithmetic number, because the mean of its divisors is an integer number (4736390410).

Almost surely, 2^9472780819 is an apocalyptic number.

9472780819 is a deficient number, since it is larger than the sum of its proper divisors (1).

9472780819 is an equidigital number, since it uses as much as digits as its factorization.

9472780819 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2032128, while the sum is 55.

The square root of 9472780819 is about 97328.2118350070. The cubic root of 9472780819 is about 2115.8871265383.

The spelling of 9472780819 in words is "nine billion, four hundred seventy-two million, seven hundred eighty thousand, eight hundred nineteen".