1949339490 has 64 divisors (see below), whose sum is σ = 5350302720. Its totient is φ = 445268160.

The previous prime is 1949339479. The next prime is 1949339503. The reversal of 1949339490 is 949339491.

It is a Curzon number.

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, 556645 + ... + 560135.

It is an arithmetic number, because the mean of its divisors is an integer number (83598480).

Almost surely, 2^1949339490 is an apocalyptic number.

1949339490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1949339490 is an abundant number, since it is smaller than the sum of its proper divisors (3400963230).

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

1949339490 is a wasteful number, since it uses less digits than its factorization.

1949339490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6167.

The product of its (nonzero) digits is 944784, while the sum is 51.

The square root of 1949339490 is about 44151.3248951829. The cubic root of 1949339490 is about 1249.1919022283.

Subtracting from 1949339490 its reverse (949339491), we obtain a palindrome (999999999).

The spelling of 1949339490 in words is "one billion, nine hundred forty-nine million, three hundred thirty-nine thousand, four hundred ninety".