1949993930 has 48 divisors (see below), whose sum is σ = 3752467560. Its totient is φ = 728703360.

The previous prime is 1949993909. The next prime is 1949993957. The reversal of 1949993930 is 393999491.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1428008521 + 521985409 = 37789^2 + 22847^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 275192 + ... + 282188.

Almost surely, 2^1949993930 is an apocalyptic number.

1949993930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1949993930 is a deficient number, since it is larger than the sum of its proper divisors (1802473630).

1949993930 is a wasteful number, since it uses less digits than its factorization.

1949993930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7095 (or 7064 counting only the distinct ones).

The product of its (nonzero) digits is 2125764, while the sum is 56.

The square root of 1949993930 is about 44158.7356023698. The cubic root of 1949993930 is about 1249.3316811436.

The spelling of 1949993930 in words is "one billion, nine hundred forty-nine million, nine hundred ninety-three thousand, nine hundred thirty".