1078976909 has 2 divisors, whose sum is σ = 1078976910. Its totient is φ = 1078976908.

The previous prime is 1078976879. The next prime is 1078976923. The reversal of 1078976909 is 9096798701.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 784168009 + 294808900 = 28003^2 + 17170^2 .

It is a cyclic number.

It is not a de Polignac number, because 1078976909 - 2¹⁶ = 1078911373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1078976609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 539488454 + 539488455.

It is an arithmetic number, because the mean of its divisors is an integer number (539488455).

Almost surely, 2^1078976909 is an apocalyptic number.

It is an amenable number.

1078976909 is a deficient number, since it is larger than the sum of its proper divisors (1).

1078976909 is an equidigital number, since it uses as much as digits as its factorization.

1078976909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1714608, while the sum is 56.

The square root of 1078976909 is about 32847.7839282957. The cubic root of 1078976909 is about 1025.6614913917.

The spelling of 1078976909 in words is "one billion, seventy-eight million, nine hundred seventy-six thousand, nine hundred nine".