1380345730 has 16 divisors (see below), whose sum is σ = 2485045944. Its totient is φ = 552044160.

The previous prime is 1380345697. The next prime is 1380345779. The reversal of 1380345730 is 375430831.

It can be written as a sum of positive squares in 4 ways, for example, as 1039611049 + 340734681 = 32243^2 + 18459^2 .

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 7 ways as a sum of consecutive naturals, for example, 104920 + ... + 117340.

Almost surely, 2^1380345730 is an apocalyptic number.

1380345730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1380345730 is a deficient number, since it is larger than the sum of its proper divisors (1104700214).

1380345730 is a wasteful number, since it uses less digits than its factorization.

1380345730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23541.

The product of its (nonzero) digits is 30240, while the sum is 34.

The square root of 1380345730 is about 37153.0043199739. The cubic root of 1380345730 is about 1113.4292480942.

The spelling of 1380345730 in words is "one billion, three hundred eighty million, three hundred forty-five thousand, seven hundred thirty".