1148939438 has 16 divisors (see below), whose sum is σ = 1744978464. Its totient is φ = 567309600.

The previous prime is 1148939413. The next prime is 1148939471. The reversal of 1148939438 is 8349398411.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 73031 + ... + 87357.

It is an arithmetic number, because the mean of its divisors is an integer number (109061154).

Almost surely, 2^1148939438 is an apocalyptic number.

1148939438 is a deficient number, since it is larger than the sum of its proper divisors (596039026).

1148939438 is a wasteful number, since it uses less digits than its factorization.

1148939438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14827.

The product of its digits is 746496, while the sum is 50.

The square root of 1148939438 is about 33896.0091751227. The cubic root of 1148939438 is about 1047.3673846274.

The spelling of 1148939438 in words is "one billion, one hundred forty-eight million, nine hundred thirty-nine thousand, four hundred thirty-eight".