1898468434 has 16 divisors (see below), whose sum is σ = 2916172800. Its totient is φ = 926681184.

The previous prime is 1898468423. The next prime is 1898468437. The reversal of 1898468434 is 4348648981.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1898468437) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53442 + ... + 81565.

It is an arithmetic number, because the mean of its divisors is an integer number (182260800).

Almost surely, 2^1898468434 is an apocalyptic number.

1898468434 is a deficient number, since it is larger than the sum of its proper divisors (1017704366).

1898468434 is a wasteful number, since it uses less digits than its factorization.

1898468434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135177.

The product of its digits is 5308416, while the sum is 55.

The square root of 1898468434 is about 43571.4176266965. The cubic root of 1898468434 is about 1238.2294436861.

The spelling of 1898468434 in words is "one billion, eight hundred ninety-eight million, four hundred sixty-eight thousand, four hundred thirty-four".