1506368421 has 16 divisors (see below), whose sum is σ = 2259211520. Its totient is φ = 1004244156.

The previous prime is 1506368407. The next prime is 1506368441. The reversal of 1506368421 is 1248636051.

It is a happy number.

1506368421 is a `hidden beast` number, since 15 + 0 + 636 + 8 + 4 + 2 + 1 = 666.

It is not a de Polignac number, because 1506368421 - 2¹⁰ = 1506367397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1506368441) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 342205 + ... + 346578.

It is an arithmetic number, because the mean of its divisors is an integer number (141200720).

Almost surely, 2^1506368421 is an apocalyptic number.

It is an amenable number.

1506368421 is a deficient number, since it is larger than the sum of its proper divisors (752843099).

1506368421 is an frugal number, since it uses more digits than its factorization.

1506368421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 688804 (or 688786 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 1506368421 is about 38811.9623441021. The cubic root of 1506368421 is about 1146.3319602452.

The spelling of 1506368421 in words is "one billion, five hundred six million, three hundred sixty-eight thousand, four hundred twenty-one".