1898474780 has 24 divisors (see below), whose sum is σ = 4026274560. Its totient is φ = 751870400.

The previous prime is 1898474777. The next prime is 1898474803. The reversal of 1898474780 is 874748981.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 467900 + ... + 471939.

It is an arithmetic number, because the mean of its divisors is an integer number (167761440).

Almost surely, 2^1898474780 is an apocalyptic number.

1898474780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1898474780 is an abundant number, since it is smaller than the sum of its proper divisors (2127799780).

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

1898474780 is a wasteful number, since it uses less digits than its factorization.

1898474780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 939949 (or 939947 counting only the distinct ones).

The product of its (nonzero) digits is 3612672, while the sum is 56.

The square root of 1898474780 is about 43571.4904496048. The cubic root of 1898474780 is about 1238.2308233588.

The spelling of 1898474780 in words is "one billion, eight hundred ninety-eight million, four hundred seventy-four thousand, seven hundred eighty".