1338941968 has 80 divisors (see below), whose sum is σ = 3253291776. Its totient is φ = 519667200.

The previous prime is 1338941959. The next prime is 1338941971. The reversal of 1338941968 is 8691498331.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68493 + ... + 85843.

Almost surely, 2^1338941968 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1338941968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1626645888).

1338941968 is an abundant number, since it is smaller than the sum of its proper divisors (1914349808).

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

1338941968 is a wasteful number, since it uses less digits than its factorization.

1338941968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17432 (or 17426 counting only the distinct ones).

The product of its digits is 1119744, while the sum is 52.

The square root of 1338941968 is about 36591.5559658236. Note that the first 3 decimals coincide. The cubic root of 1338941968 is about 1102.1835327271.

The spelling of 1338941968 in words is "one billion, three hundred thirty-eight million, nine hundred forty-one thousand, nine hundred sixty-eight".