1899739458 has 24 divisors (see below), whose sum is σ = 4248880896. Its totient is φ = 612819000.

The previous prime is 1899739423. The next prime is 1899739547. The reversal of 1899739458 is 8549379981.

1899739458 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 1899739395 and 1899739404.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1701718 + ... + 1702833.

It is an arithmetic number, because the mean of its divisors is an integer number (177036704).

Almost surely, 2^1899739458 is an apocalyptic number.

1899739458 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1899739458 is an abundant number, since it is smaller than the sum of its proper divisors (2349141438).

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

1899739458 is a wasteful number, since it uses less digits than its factorization.

1899739458 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3404590 (or 3404587 counting only the distinct ones).

The product of its digits is 19595520, while the sum is 63.

The square root of 1899739458 is about 43586.0007112375. Note that the first 3 decimals coincide. The cubic root of 1899739458 is about 1238.5057134446.

The spelling of 1899739458 in words is "one billion, eight hundred ninety-nine million, seven hundred thirty-nine thousand, four hundred fifty-eight".