1949919930 has 48 divisors (see below), whose sum is σ = 5794049664. Its totient is φ = 445695840.

The previous prime is 1949919919. The next prime is 1949919989. The reversal of 1949919930 is 399199491.

It is a super-2 number, since 2×1949919930² = 7604375466822409800, which contains 22 as substring.

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 23 ways as a sum of consecutive naturals, for example, 1546926 + ... + 1548185.

It is an arithmetic number, because the mean of its divisors is an integer number (120709368).

Almost surely, 2^1949919930 is an apocalyptic number.

1949919930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1949919930 is an abundant number, since it is smaller than the sum of its proper divisors (3844129734).

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

1949919930 is a wasteful number, since it uses less digits than its factorization.

1949919930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3095131 (or 3095128 counting only the distinct ones).

The product of its (nonzero) digits is 708588, while the sum is 54.

The square root of 1949919930 is about 44157.8977081111. The cubic root of 1949919930 is about 1249.3158773826.

The spelling of 1949919930 in words is "one billion, nine hundred forty-nine million, nine hundred nineteen thousand, nine hundred thirty".