1318042694 has 4 divisors (see below), whose sum is σ = 1977064044. Its totient is φ = 659021346.

The previous prime is 1318042633. The next prime is 1318042709. The reversal of 1318042694 is 4962408131.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 329510672 + ... + 329510675.

It is an arithmetic number, because the mean of its divisors is an integer number (494266011).

Almost surely, 2^1318042694 is an apocalyptic number.

1318042694 is a deficient number, since it is larger than the sum of its proper divisors (659021350).

1318042694 is an equidigital number, since it uses as much as digits as its factorization.

1318042694 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 659021349.

The product of its (nonzero) digits is 41472, while the sum is 38.

The square root of 1318042694 is about 36304.8577190436. The cubic root of 1318042694 is about 1096.4188480952.

The spelling of 1318042694 in words is "one billion, three hundred eighteen million, forty-two thousand, six hundred ninety-four".