1499368321 has 16 divisors (see below), whose sum is σ = 1714940928. Its totient is φ = 1297573200.

The previous prime is 1499368313. The next prime is 1499368391. The reversal of 1499368321 is 1238639941.

It is a happy number.

It is not a de Polignac number, because 1499368321 - 2³ = 1499368313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1499368301) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39340 + ... + 67426.

It is an arithmetic number, because the mean of its divisors is an integer number (107183808).

Almost surely, 2^1499368321 is an apocalyptic number.

1499368321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1499368321 is a deficient number, since it is larger than the sum of its proper divisors (215572607).

1499368321 is a wasteful number, since it uses less digits than its factorization.

1499368321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28332.

The product of its digits is 279936, while the sum is 46.

The square root of 1499368321 is about 38721.6776625187. The cubic root of 1499368321 is about 1144.5535328923.

The spelling of 1499368321 in words is "one billion, four hundred ninety-nine million, three hundred sixty-eight thousand, three hundred twenty-one".