1391338734 has 8 divisors (see below), whose sum is σ = 2782677480. Its totient is φ = 463779576.

The previous prime is 1391338723. The next prime is 1391338801. The reversal of 1391338734 is 4378331931.

It is a sphenic number, since it is the product of 3 distinct primes.

1391338734 is an admirable number.

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 in 3 ways as a sum of consecutive naturals, for example, 115944889 + ... + 115944900.

It is an arithmetic number, because the mean of its divisors is an integer number (347834685).

Almost surely, 2^1391338734 is an apocalyptic number.

1391338734 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1391338734 is a wasteful number, since it uses less digits than its factorization.

1391338734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231889794.

The product of its digits is 163296, while the sum is 42.

The square root of 1391338734 is about 37300.6532650569. The cubic root of 1391338734 is about 1116.3772009585.

The spelling of 1391338734 in words is "one billion, three hundred ninety-one million, three hundred thirty-eight thousand, seven hundred thirty-four".