1388820130 has 16 divisors (see below), whose sum is σ = 2502247104. Its totient is φ = 555001200.

The previous prime is 1388820127. The next prime is 1388820163. The reversal of 1388820130 is 310288831.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54696 + ... + 75955.

It is an arithmetic number, because the mean of its divisors is an integer number (156390444).

Almost surely, 2^1388820130 is an apocalyptic number.

1388820130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1388820130 is a deficient number, since it is larger than the sum of its proper divisors (1113426974).

1388820130 is a wasteful number, since it uses less digits than its factorization.

1388820130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131721.

The product of its (nonzero) digits is 9216, while the sum is 34.

The square root of 1388820130 is about 37266.8771162812. The cubic root of 1388820130 is about 1115.7031713801.

The spelling of 1388820130 in words is "one billion, three hundred eighty-eight million, eight hundred twenty thousand, one hundred thirty".