1948394985 has 16 divisors (see below), whose sum is σ = 3118632000. Its totient is φ = 1038744000.

The previous prime is 1948394971. The next prime is 1948395013. The reversal of 1948394985 is 5894938491.

It is not a de Polignac number, because 1948394985 - 2⁴ = 1948394969 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17610 + ... + 64860.

It is an arithmetic number, because the mean of its divisors is an integer number (194914500).

Almost surely, 2^1948394985 is an apocalyptic number.

1948394985 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1948394985 is a deficient number, since it is larger than the sum of its proper divisors (1170237015).

1948394985 is a wasteful number, since it uses less digits than its factorization.

1948394985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50008.

The product of its digits is 11197440, while the sum is 60.

The square root of 1948394985 is about 44140.6273743362. The cubic root of 1948394985 is about 1248.9901144580.

The spelling of 1948394985 in words is "one billion, nine hundred forty-eight million, three hundred ninety-four thousand, nine hundred eighty-five".