1338001620 has 24 divisors (see below), whose sum is σ = 3746404704. Its totient is φ = 356800416.

The previous prime is 1338001619. The next prime is 1338001657. The reversal of 1338001620 is 261008331.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11149954 + ... + 11150073.

It is an arithmetic number, because the mean of its divisors is an integer number (156100196).

Almost surely, 2^1338001620 is an apocalyptic number.

1338001620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1338001620 is an abundant number, since it is smaller than the sum of its proper divisors (2408403084).

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

1338001620 is a wasteful number, since it uses less digits than its factorization.

1338001620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22300039 (or 22300037 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 1338001620 is about 36578.7044603824. The cubic root of 1338001620 is about 1101.9254486497.

Adding to 1338001620 its reverse (261008331), we get a palindrome (1599009951).

The spelling of 1338001620 in words is "one billion, three hundred thirty-eight million, one thousand, six hundred twenty".