1338609020 has 48 divisors (see below), whose sum is σ = 3216604608. Its totient is φ = 458388480.

The previous prime is 1338609017. The next prime is 1338609023. The reversal of 1338609020 is 209068331.

It is an interprime number because it is at equal distance from previous prime (1338609017) and next prime (1338609023).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1338609023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 117914 + ... + 128766.

It is an arithmetic number, because the mean of its divisors is an integer number (67012596).

Almost surely, 2^1338609020 is an apocalyptic number.

1338609020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1338609020 is an abundant number, since it is smaller than the sum of its proper divisors (1877995588).

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

1338609020 is a wasteful number, since it uses less digits than its factorization.

1338609020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11750 (or 11748 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 1338609020 is about 36587.0061633908. The cubic root of 1338609020 is about 1102.0921669987.

The spelling of 1338609020 in words is "one billion, three hundred thirty-eight million, six hundred nine thousand, twenty".