1918198204 has 24 divisors (see below), whose sum is σ = 3620599808. Its totient is φ = 883967040.

The previous prime is 1918198201. The next prime is 1918198231. The reversal of 1918198204 is 4028918191.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1918198201) 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, 6469 + ... + 62275.

Almost surely, 2^1918198204 is an apocalyptic number.

It is an amenable number.

1918198204 is a deficient number, since it is larger than the sum of its proper divisors (1702401604).

1918198204 is a wasteful number, since it uses less digits than its factorization.

1918198204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56485 (or 56483 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 43.

The square root of 1918198204 is about 43797.2396847107. The cubic root of 1918198204 is about 1242.5040890953.

The spelling of 1918198204 in words is "one billion, nine hundred eighteen million, one hundred ninety-eight thousand, two hundred four".