1389552930 has 24 divisors (see below), whose sum is σ = 3612837852. Its totient is φ = 370547424.

The previous prime is 1389552911. The next prime is 1389552937. The reversal of 1389552930 is 392559831.

1389552930 is a `hidden beast` number, since 1 + 3 + 8 + 9 + 552 + 93 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1256773401 + 132779529 = 35451^2 + 11523^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (1389552937) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7719649 + ... + 7719828.

Almost surely, 2^1389552930 is an apocalyptic number.

1389552930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1389552930 is an abundant number, since it is smaller than the sum of its proper divisors (2223284922).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1389552930 is a wasteful number, since it uses less digits than its factorization.

1389552930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15439490 (or 15439487 counting only the distinct ones).

The product of its (nonzero) digits is 291600, while the sum is 45.

The square root of 1389552930 is about 37276.7076067616. The cubic root of 1389552930 is about 1115.8993675399.

The spelling of 1389552930 in words is "one billion, three hundred eighty-nine million, five hundred fifty-two thousand, nine hundred thirty".