1949559490 has 64 divisors (see below), whose sum is σ = 3770426880. Its totient is φ = 723225600.

The previous prime is 1949559487. The next prime is 1949559509. The reversal of 1949559490 is 949559491.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4440691 + ... + 4441129.

It is an arithmetic number, because the mean of its divisors is an integer number (58912920).

Almost surely, 2^1949559490 is an apocalyptic number.

1949559490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1949559490 is a deficient number, since it is larger than the sum of its proper divisors (1820867390).

1949559490 is a wasteful number, since it uses less digits than its factorization.

1949559490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 787.

The product of its (nonzero) digits is 2624400, while the sum is 55.

The square root of 1949559490 is about 44153.8162563555. The cubic root of 1949559490 is about 1249.2388945355.

Subtracting from 1949559490 its reverse (949559491), we obtain a palindrome (999999999).

The spelling of 1949559490 in words is "one billion, nine hundred forty-nine million, five hundred fifty-nine thousand, four hundred ninety".