1949930838 has 24 divisors (see below), whose sum is σ = 4473371448. Its totient is φ = 611742912.

The previous prime is 1949930809. The next prime is 1949930863. The reversal of 1949930838 is 8380399491.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3185856 + ... + 3186467.

It is an arithmetic number, because the mean of its divisors is an integer number (186390477).

Almost surely, 2^1949930838 is an apocalyptic number.

1949930838 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1949930838 is an abundant number, since it is smaller than the sum of its proper divisors (2523440610).

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

1949930838 is a wasteful number, since it uses less digits than its factorization.

1949930838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6372348 (or 6372345 counting only the distinct ones).

The product of its (nonzero) digits is 1679616, while the sum is 54.

The square root of 1949930838 is about 44158.0212192530. The cubic root of 1949930838 is about 1249.3182069676.

The spelling of 1949930838 in words is "one billion, nine hundred forty-nine million, nine hundred thirty thousand, eight hundred thirty-eight".