2138047950 has 24 divisors (see below), whose sum is σ = 5302359288. Its totient is φ = 570146080.

The previous prime is 2138047943. The next prime is 2138047969. The reversal of 2138047950 is 597408312.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 2138047899 and 2138047908.

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 11 ways as a sum of consecutive naturals, for example, 7126677 + ... + 7126976.

It is an arithmetic number, because the mean of its divisors is an integer number (220931637).

Almost surely, 2^2138047950 is an apocalyptic number.

2138047950 is an abundant number, since it is smaller than the sum of its proper divisors (3164311338).

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

2138047950 is a wasteful number, since it uses less digits than its factorization.

2138047950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14253668 (or 14253663 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 39.

The square root of 2138047950 is about 46239.0305910494. The cubic root of 2138047950 is about 1288.2667968176.

The spelling of 2138047950 in words is "two billion, one hundred thirty-eight million, forty-seven thousand, nine hundred fifty".