1388954914 has 8 divisors (see below), whose sum is σ = 2139741468. Its totient is φ = 675707760.

The previous prime is 1388954887. The next prime is 1388955017. The reversal of 1388954914 is 4194598831.

It can be written as a sum of positive squares in 2 ways, for example, as 952771689 + 436183225 = 30867^2 + 20885^2 .

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

It is an unprimeable number.

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, 9384757 + ... + 9384904.

Almost surely, 2^1388954914 is an apocalyptic number.

1388954914 is a deficient number, since it is larger than the sum of its proper divisors (750786554).

1388954914 is a wasteful number, since it uses less digits than its factorization.

1388954914 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18769700.

The product of its digits is 1244160, while the sum is 52.

The square root of 1388954914 is about 37268.6854342892. The cubic root of 1388954914 is about 1115.7392629441.

The spelling of 1388954914 in words is "one billion, three hundred eighty-eight million, nine hundred fifty-four thousand, nine hundred fourteen".