1378687132 has 12 divisors (see below), whose sum is σ = 2413220656. Its totient is φ = 689195520.

The previous prime is 1378687127. The next prime is 1378687133. The reversal of 1378687132 is 2317868731.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1378687133) 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, 14544 + ... + 54487.

Almost surely, 2^1378687132 is an apocalyptic number.

It is an amenable number.

1378687132 is a deficient number, since it is larger than the sum of its proper divisors (1034533524).

1378687132 is a wasteful number, since it uses less digits than its factorization.

1378687132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74028 (or 74026 counting only the distinct ones).

The product of its digits is 338688, while the sum is 46.

The square root of 1378687132 is about 37130.6764279888. The cubic root of 1378687132 is about 1112.9831106654.

The spelling of 1378687132 in words is "one billion, three hundred seventy-eight million, six hundred eighty-seven thousand, one hundred thirty-two".