1394134688 has 24 divisors (see below), whose sum is σ = 2746359252. Its totient is φ = 696646656.

The previous prime is 1394134681. The next prime is 1394134717. The reversal of 1394134688 is 8864314931.

It can be written as a sum of positive squares in 2 ways, for example, as 1363972624 + 30162064 = 36932^2 + 5492^2 .

It is a super-2 number, since 2×1394134688² = 3887223056569714688, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1394134681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44606 + ... + 69122.

Almost surely, 2^1394134688 is an apocalyptic number.

It is an amenable number.

1394134688 is a deficient number, since it is larger than the sum of its proper divisors (1352224564).

1394134688 is a wasteful number, since it uses less digits than its factorization.

1394134688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26304 (or 26296 counting only the distinct ones).

The product of its digits is 497664, while the sum is 47.

The square root of 1394134688 is about 37338.1130749801. The cubic root of 1394134688 is about 1117.1245029956.

The spelling of 1394134688 in words is "one billion, three hundred ninety-four million, one hundred thirty-four thousand, six hundred eighty-eight".