1898664376 has 32 divisors (see below), whose sum is σ = 4282704000. Its totient is φ = 770885856.

The previous prime is 1898664371. The next prime is 1898664377. The reversal of 1898664376 is 6734668981.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1898664376.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1898664371) 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, 891166 + ... + 893293.

It is an arithmetic number, because the mean of its divisors is an integer number (133834500).

Almost surely, 2^1898664376 is an apocalyptic number.

It is an amenable number.

1898664376 is an abundant number, since it is smaller than the sum of its proper divisors (2384039624).

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

1898664376 is a wasteful number, since it uses less digits than its factorization.

1898664376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1784491 (or 1784487 counting only the distinct ones).

The product of its digits is 10450944, while the sum is 58.

The square root of 1898664376 is about 43573.6660840008. Note that the first 3 decimals coincide. The cubic root of 1898664376 is about 1238.2720416742.

The spelling of 1898664376 in words is "one billion, eight hundred ninety-eight million, six hundred sixty-four thousand, three hundred seventy-six".