1520411820 has 24 divisors (see below), whose sum is σ = 4257153264. Its totient is φ = 405443136.

The previous prime is 1520411791. The next prime is 1520411839. The reversal of 1520411820 is 281140251.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12670039 + ... + 12670158.

It is an arithmetic number, because the mean of its divisors is an integer number (177381386).

Almost surely, 2^1520411820 is an apocalyptic number.

1520411820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1520411820 is an abundant number, since it is smaller than the sum of its proper divisors (2736741444).

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

1520411820 is a wasteful number, since it uses less digits than its factorization.

1520411820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25340209 (or 25340207 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 24.

The square root of 1520411820 is about 38992.4585016128. The cubic root of 1520411820 is about 1149.8832446054.

The spelling of 1520411820 in words is "one billion, five hundred twenty million, four hundred eleven thousand, eight hundred twenty".