1545652420 has 48 divisors (see below), whose sum is σ = 3526553520. Its totient is φ = 565641216.

The previous prime is 1545652397. The next prime is 1545652421. The reversal of 1545652420 is 242565451.

It can be written as a sum of positive squares in 8 ways, for example, as 142850304 + 1402802116 = 11952^2 + 37454^2 .

It is not an unprimeable number, because it can be changed into a prime (1545652421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3076 + ... + 55684.

It is an arithmetic number, because the mean of its divisors is an integer number (73469865).

Almost surely, 2^1545652420 is an apocalyptic number.

1545652420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1545652420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1763276760).

1545652420 is an abundant number, since it is smaller than the sum of its proper divisors (1980901100).

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

1545652420 is a wasteful number, since it uses less digits than its factorization.

1545652420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52744 (or 52742 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 34.

The square root of 1545652420 is about 39314.7862769213. The cubic root of 1545652420 is about 1156.2114859536.

It can be divided in two parts, 15456 and 52420, that added together give a palindrome (67876).

The spelling of 1545652420 in words is "one billion, five hundred forty-five million, six hundred fifty-two thousand, four hundred twenty".