1898479398 has 64 divisors (see below), whose sum is σ = 3993520320. Its totient is φ = 601016832.

The previous prime is 1898479397. The next prime is 1898479421. The reversal of 1898479398 is 8939748981.

1898479398 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1898479397) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3729568 + ... + 3730076.

It is an arithmetic number, because the mean of its divisors is an integer number (62398755).

Almost surely, 2^1898479398 is an apocalyptic number.

1898479398 is an abundant number, since it is smaller than the sum of its proper divisors (2095040922).

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

1898479398 is a wasteful number, since it uses less digits than its factorization.

1898479398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 921.

The product of its digits is 31352832, while the sum is 66.

The square root of 1898479398 is about 43571.5434429399. The cubic root of 1898479398 is about 1238.2318273482.

The spelling of 1898479398 in words is "one billion, eight hundred ninety-eight million, four hundred seventy-nine thousand, three hundred ninety-eight".