1929433138 has 12 divisors (see below), whose sum is σ = 2906481870. Its totient is φ = 960623216.

The previous prime is 1929433127. The next prime is 1929433141. The reversal of 1929433138 is 8313349291.

It can be written as a sum of positive squares in only one way, i.e., 1912925169 + 16507969 = 43737^2 + 4063^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1929433094 and 1929433103.

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 5 ways as a sum of consecutive naturals, for example, 105798 + ... + 122686.

Almost surely, 2^1929433138 is an apocalyptic number.

1929433138 is a deficient number, since it is larger than the sum of its proper divisors (977048732).

1929433138 is an equidigital number, since it uses as much as digits as its factorization.

1929433138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17369 (or 17130 counting only the distinct ones).

The product of its digits is 139968, while the sum is 43.

The square root of 1929433138 is about 43925.3131804430. The cubic root of 1929433138 is about 1244.9251607944.

The spelling of 1929433138 in words is "one billion, nine hundred twenty-nine million, four hundred thirty-three thousand, one hundred thirty-eight".