1949019490 has 32 divisors (see below), whose sum is σ = 3829550400. Its totient is φ = 708292800.

The previous prime is 1949019469. The next prime is 1949019521. The reversal of 1949019490 is 949109491.

It is a self number, because there is not a number n which added to its sum of digits gives 1949019490.

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, 209845 + ... + 218935.

It is an arithmetic number, because the mean of its divisors is an integer number (119673450).

Almost surely, 2^1949019490 is an apocalyptic number.

1949019490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1949019490 is a deficient number, since it is larger than the sum of its proper divisors (1880530910).

1949019490 is a wasteful number, since it uses less digits than its factorization.

1949019490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11058.

The product of its (nonzero) digits is 104976, while the sum is 46.

The square root of 1949019490 is about 44147.7008461369. The cubic root of 1949019490 is about 1249.1235434695.

Subtracting from 1949019490 its reverse (949109491), we obtain a palindrome (999909999).

The spelling of 1949019490 in words is "one billion, nine hundred forty-nine million, nineteen thousand, four hundred ninety".