1338451900 has 36 divisors (see below), whose sum is σ = 2966247648. Its totient is φ = 523987840.

The previous prime is 1338451883. The next prime is 1338451901. The reversal of 1338451900 is 91548331.

It is a super-2 number, since 2×1338451900² = 3582906977227220000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1338451901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 137689 + ... + 147088.

It is an arithmetic number, because the mean of its divisors is an integer number (82395768).

Almost surely, 2^1338451900 is an apocalyptic number.

1338451900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1338451900 is an abundant number, since it is smaller than the sum of its proper divisors (1627795748).

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

1338451900 is a wasteful number, since it uses less digits than its factorization.

1338451900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284838 (or 284831 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 1338451900 is about 36584.8588899834. The cubic root of 1338451900 is about 1102.0490457452.

The spelling of 1338451900 in words is "one billion, three hundred thirty-eight million, four hundred fifty-one thousand, nine hundred".