1338941958 has 16 divisors (see below), whose sum is σ = 2687417136. Its totient is φ = 444725120.

The previous prime is 1338941957. The next prime is 1338941959. The reversal of 1338941958 is 8591498331.

It is an interprime number because it is at equal distance from previous prime (1338941957) and next prime (1338941959).

It is a self number, because there is not a number n which added to its sum of digits gives 1338941958.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1338941957) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 395391 + ... + 398762.

It is an arithmetic number, because the mean of its divisors is an integer number (167963571).

Almost surely, 2^1338941958 is an apocalyptic number.

1338941958 is an abundant number, since it is smaller than the sum of its proper divisors (1348475178).

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

1338941958 is a wasteful number, since it uses less digits than its factorization.

1338941958 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 794439.

The product of its digits is 933120, while the sum is 51.

The square root of 1338941958 is about 36591.5558291800. Note that the first 3 decimals coincide. The cubic root of 1338941958 is about 1102.1835299832.

The spelling of 1338941958 in words is "one billion, three hundred thirty-eight million, nine hundred forty-one thousand, nine hundred fifty-eight".