1539009252 has 72 divisors (see below), whose sum is σ = 4493597472. Its totient is φ = 438931200.

The previous prime is 1539009247. The next prime is 1539009257. The reversal of 1539009252 is 2529009351.

It is a happy number.

1539009252 is a `hidden beast` number, since 15 + 390 + 0 + 9 + 252 = 666.

It is an interprime number because it is at equal distance from previous prime (1539009247) and next prime (1539009257).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (1539009257) 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 23 ways as a sum of consecutive naturals, for example, 107574 + ... + 121037.

It is an arithmetic number, because the mean of its divisors is an integer number (62411076).

Almost surely, 2^1539009252 is an apocalyptic number.

1539009252 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1539009252 is an abundant number, since it is smaller than the sum of its proper divisors (2954588220).

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

1539009252 is a wasteful number, since it uses less digits than its factorization.

1539009252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228649 (or 228644 counting only the distinct ones).

The product of its (nonzero) digits is 24300, while the sum is 36.

The square root of 1539009252 is about 39230.2084113760. The cubic root of 1539009252 is about 1154.5526529803.

Subtracting 1539009252 from its reverse (2529009351), we obtain a palindrome (990000099).

The spelling of 1539009252 in words is "one billion, five hundred thirty-nine million, nine thousand, two hundred fifty-two".