1208138532 has 24 divisors (see below), whose sum is σ = 2819902176. Its totient is φ = 402582528.

The previous prime is 1208138527. The next prime is 1208138557. The reversal of 1208138532 is 2358318021.

It is a junction number, because it is equal to n+sod(n) for n = 1208138493 and 1208138502.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26923 + ... + 56045.

It is an arithmetic number, because the mean of its divisors is an integer number (117495924).

Almost surely, 2^1208138532 is an apocalyptic number.

1208138532 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1208138532 is an abundant number, since it is smaller than the sum of its proper divisors (1611763644).

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

1208138532 is a wasteful number, since it uses less digits than its factorization.

1208138532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32587 (or 32585 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 1208138532 is about 34758.2872420377. The cubic root of 1208138532 is about 1065.0555143096.

The spelling of 1208138532 in words is "one billion, two hundred eight million, one hundred thirty-eight thousand, five hundred thirty-two".