1501512012 has 768 divisors, whose sum is σ = 5960908800. Its totient is φ = 313528320.

The previous prime is 1501511989. The next prime is 1501512041. The reversal of 1501512012 is 2102151051.

1501512012 is a `hidden beast` number, since 150 + 1 + 512 + 0 + 1 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 34918863 + ... + 34918905.

It is an arithmetic number, because the mean of its divisors is an integer number (7761600).

Almost surely, 2^1501512012 is an apocalyptic number.

1501512012 is a gapful number since it is divisible by the number (12) 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 1501512012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2980454400).

1501512012 is an abundant number, since it is smaller than the sum of its proper divisors (4459396788).

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

1501512012 is a wasteful number, since it uses less digits than its factorization.

1501512012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123 (or 115 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 18.

The square root of 1501512012 is about 38749.3485364593. The cubic root of 1501512012 is about 1145.0987404280.

Adding to 1501512012 its reverse (2102151051), we get a palindrome (3603663063).

The spelling of 1501512012 in words is "one billion, five hundred one million, five hundred twelve thousand, twelve".