1918304242 has 16 divisors (see below), whose sum is σ = 3145001472. Its totient is φ = 873610560.

The previous prime is 1918304237. The next prime is 1918304249. The reversal of 1918304242 is 2424038191.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a junction number, because it is equal to n+sod(n) for n = 1918304198 and 1918304207.

It is not an unprimeable number, because it can be changed into a prime (1918304249) 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, 908958 + ... + 911065.

It is an arithmetic number, because the mean of its divisors is an integer number (196562592).

Almost surely, 2^1918304242 is an apocalyptic number.

1918304242 is a deficient number, since it is larger than the sum of its proper divisors (1226697230).

1918304242 is a wasteful number, since it uses less digits than its factorization.

1918304242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1820073.

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 1918304242 is about 43798.4502237237. The cubic root of 1918304242 is about 1242.5269838828.

The spelling of 1918304242 in words is "one billion, nine hundred eighteen million, three hundred four thousand, two hundred forty-two".