1338987043 has 16 divisors (see below), whose sum is σ = 1428192000. Its totient is φ = 1252927872.

The previous prime is 1338987029. The next prime is 1338987047. The reversal of 1338987043 is 3407898331.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1338987043 - 2²¹ = 1336889891 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1338986984 and 1338987002.

It is not an unprimeable number, because it can be changed into a prime (1338987047) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 286318 + ... + 290956.

It is an arithmetic number, because the mean of its divisors is an integer number (89262000).

Almost surely, 2^1338987043 is an apocalyptic number.

1338987043 is a deficient number, since it is larger than the sum of its proper divisors (89204957).

1338987043 is a wasteful number, since it uses less digits than its factorization.

1338987043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4974.

The product of its (nonzero) digits is 435456, while the sum is 46.

The square root of 1338987043 is about 36592.1718814284. The cubic root of 1338987043 is about 1102.1959007924.

The spelling of 1338987043 in words is "one billion, three hundred thirty-eight million, nine hundred eighty-seven thousand, forty-three".