1501545420 has 36 divisors (see below), whose sum is σ = 4554688320. Its totient is φ = 400412064.

The previous prime is 1501545379. The next prime is 1501545427. The reversal of 1501545420 is 245451051.

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (1501545427) 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, 4170780 + ... + 4171139.

It is an arithmetic number, because the mean of its divisors is an integer number (126519120).

Almost surely, 2^1501545420 is an apocalyptic number.

1501545420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1501545420 is an abundant number, since it is smaller than the sum of its proper divisors (3053142900).

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

1501545420 is a wasteful number, since it uses less digits than its factorization.

1501545420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8341934 (or 8341929 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 27.

The square root of 1501545420 is about 38749.7796122765. The cubic root of 1501545420 is about 1145.1072330174.

Adding to 1501545420 its reverse (245451051), we get a palindrome (1746996471).

The spelling of 1501545420 in words is "one billion, five hundred one million, five hundred forty-five thousand, four hundred twenty".