1389048148 has 24 divisors (see below), whose sum is σ = 2540601000. Its totient is φ = 663656448.

The previous prime is 1389048127. The next prime is 1389048173. The reversal of 1389048148 is 8418409831.

It can be written as a sum of positive squares in 4 ways, for example, as 250525584 + 1138522564 = 15828^2 + 33742^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1389048098 and 1389048107.

It is a congruent number.

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, 50473 + ... + 72976.

It is an arithmetic number, because the mean of its divisors is an integer number (105858375).

Almost surely, 2^1389048148 is an apocalyptic number.

It is an amenable number.

1389048148 is a deficient number, since it is larger than the sum of its proper divisors (1151552852).

1389048148 is a wasteful number, since it uses less digits than its factorization.

1389048148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123579 (or 123577 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 46.

The square root of 1389048148 is about 37269.9362489393. The cubic root of 1389048148 is about 1115.7642271590.

It can be divided in two parts, 13890481 and 48, that added together give a square (13890529 = 3727²).

The spelling of 1389048148 in words is "one billion, three hundred eighty-nine million, forty-eight thousand, one hundred forty-eight".