1948099138 has 8 divisors (see below), whose sum is σ = 2949458832. Its totient is φ = 964946196.

The previous prime is 1948099129. The next prime is 1948099151. The reversal of 1948099138 is 8319908491.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4551420 + ... + 4551847.

It is an arithmetic number, because the mean of its divisors is an integer number (368682354).

Almost surely, 2^1948099138 is an apocalyptic number.

1948099138 is a deficient number, since it is larger than the sum of its proper divisors (1001359694).

1948099138 is a wasteful number, since it uses less digits than its factorization.

1948099138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9103376.

The product of its (nonzero) digits is 559872, while the sum is 52.

The square root of 1948099138 is about 44137.2760600380. The cubic root of 1948099138 is about 1248.9268951270.

The spelling of 1948099138 in words is "one billion, nine hundred forty-eight million, ninety-nine thousand, one hundred thirty-eight".