1538229924 has 216 divisors, whose sum is σ = 4970556864. Its totient is φ = 392515200.

The previous prime is 1538229907. The next prime is 1538229941. The reversal of 1538229924 is 4299228351.

1538229924 is a `hidden beast` number, since 1 + 538 + 2 + 2 + 99 + 24 = 666.

It is an interprime number because it is at equal distance from previous prime (1538229907) and next prime (1538229941).

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 1538229924.

It is an unprimeable number.

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 71 ways as a sum of consecutive naturals, for example, 1859599 + ... + 1860425.

Almost surely, 2^1538229924 is an apocalyptic number.

1538229924 is a gapful number since it is divisible by the number (14) 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 1538229924, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2485278432).

1538229924 is an abundant number, since it is smaller than the sum of its proper divisors (3432326940).

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

1538229924 is a wasteful number, since it uses less digits than its factorization.

1538229924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 927 (or 911 counting only the distinct ones).

The product of its digits is 311040, while the sum is 45.

The square root of 1538229924 is about 39220.2743998560. The cubic root of 1538229924 is about 1154.3577381612.

The spelling of 1538229924 in words is "one billion, five hundred thirty-eight million, two hundred twenty-nine thousand, nine hundred twenty-four".