1354888820 has 24 divisors (see below), whose sum is σ = 2898953064. Its totient is φ = 531729536.

The previous prime is 1354888813. The next prime is 1354888859. The reversal of 1354888820 is 288884531.

It can be written as a sum of positive squares in 4 ways, for example, as 265624804 + 1089264016 = 16298^2 + 33004^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 638039 + ... + 640158.

It is an arithmetic number, because the mean of its divisors is an integer number (120789711).

Almost surely, 2^1354888820 is an apocalyptic number.

1354888820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1354888820 is an abundant number, since it is smaller than the sum of its proper divisors (1544064244).

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

1354888820 is a wasteful number, since it uses less digits than its factorization.

1354888820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1278259 (or 1278257 counting only the distinct ones).

The product of its (nonzero) digits is 491520, while the sum is 47.

The square root of 1354888820 is about 36808.8144335022. The cubic root of 1354888820 is about 1106.5419584559.

The spelling of 1354888820 in words is "one billion, three hundred fifty-four million, eight hundred eighty-eight thousand, eight hundred twenty".