1386739730 has 16 divisors (see below), whose sum is σ = 2500913664. Its totient is φ = 553633200.

The previous prime is 1386739721. The next prime is 1386739733. The reversal of 1386739730 is 379376831.

It is not an unprimeable number, because it can be changed into a prime (1386739733) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 127346 + ... + 137805.

It is an arithmetic number, because the mean of its divisors is an integer number (156307104).

Almost surely, 2^1386739730 is an apocalyptic number.

1386739730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1386739730 is a deficient number, since it is larger than the sum of its proper divisors (1114173934).

1386739730 is a wasteful number, since it uses less digits than its factorization.

1386739730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265681.

The product of its (nonzero) digits is 571536, while the sum is 47.

The square root of 1386739730 is about 37238.9544697485. The cubic root of 1386739730 is about 1115.1457992696.

The spelling of 1386739730 in words is "one billion, three hundred eighty-six million, seven hundred thirty-nine thousand, seven hundred thirty".