1378529630 has 8 divisors (see below), whose sum is σ = 2481353352. Its totient is φ = 551411848.

The previous prime is 1378529627. The next prime is 1378529641. The reversal of 1378529630 is 369258731.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68926472 + ... + 68926491.

It is an arithmetic number, because the mean of its divisors is an integer number (310169169).

Almost surely, 2^1378529630 is an apocalyptic number.

1378529630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1378529630 is a deficient number, since it is larger than the sum of its proper divisors (1102823722).

1378529630 is a wasteful number, since it uses less digits than its factorization.

1378529630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137852970.

The product of its (nonzero) digits is 272160, while the sum is 44.

The square root of 1378529630 is about 37128.5554526432. Note that the first 3 decimals coincide. The cubic root of 1378529630 is about 1112.9407264441.

The spelling of 1378529630 in words is "one billion, three hundred seventy-eight million, five hundred twenty-nine thousand, six hundred thirty".