2138645048 has 16 divisors (see below), whose sum is σ = 4010688000. Its totient is φ = 1069128256.

The previous prime is 2138645023. The next prime is 2138645063. The reversal of 2138645048 is 8405468312.

It is a junction number, because it is equal to n+sod(n) for n = 2138644996 and 2138645014.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29513 + ... + 71751.

It is an arithmetic number, because the mean of its divisors is an integer number (250668000).

Almost surely, 2^2138645048 is an apocalyptic number.

It is an amenable number.

2138645048 is a deficient number, since it is larger than the sum of its proper divisors (1872042952).

2138645048 is a wasteful number, since it uses less digits than its factorization.

2138645048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48574 (or 48570 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 41.

The square root of 2138645048 is about 46245.4867851988. The cubic root of 2138645048 is about 1288.3867114858.

The spelling of 2138645048 in words is "two billion, one hundred thirty-eight million, six hundred forty-five thousand, forty-eight".