1078243913 has 2 divisors, whose sum is σ = 1078243914. Its totient is φ = 1078243912.

The previous prime is 1078243823. The next prime is 1078243987. The reversal of 1078243913 is 3193428701.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1024192009 + 54051904 = 32003^2 + 7352^2 .

It is a cyclic number.

It is not a de Polignac number, because 1078243913 - 2¹⁰ = 1078242889 is a prime.

It is not a weakly prime, because it can be changed into another prime (1078243993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 539121956 + 539121957.

It is an arithmetic number, because the mean of its divisors is an integer number (539121957).

Almost surely, 2^1078243913 is an apocalyptic number.

It is an amenable number.

1078243913 is a deficient number, since it is larger than the sum of its proper divisors (1).

1078243913 is an equidigital number, since it uses as much as digits as its factorization.

1078243913 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 1078243913 is about 32836.6245676988. The cubic root of 1078243913 is about 1025.4291799389.

The spelling of 1078243913 in words is "one billion, seventy-eight million, two hundred forty-three thousand, nine hundred thirteen".