1278374059 has 2 divisors, whose sum is σ = 1278374060. Its totient is φ = 1278374058.

The previous prime is 1278374057. The next prime is 1278374089. The reversal of 1278374059 is 9504738721.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1278374059 - 2¹ = 1278374057 is a prime.

Together with 1278374057, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1278374057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 639187029 + 639187030.

It is an arithmetic number, because the mean of its divisors is an integer number (639187030).

Almost surely, 2^1278374059 is an apocalyptic number.

1278374059 is a deficient number, since it is larger than the sum of its proper divisors (1).

1278374059 is an equidigital number, since it uses as much as digits as its factorization.

1278374059 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 423360, while the sum is 46.

The square root of 1278374059 is about 35754.3572030039. The cubic root of 1278374059 is about 1085.3071140359.

The spelling of 1278374059 in words is "one billion, two hundred seventy-eight million, three hundred seventy-four thousand, fifty-nine".