1918627442 has 8 divisors (see below), whose sum is σ = 2897000832. Its totient is φ = 952960500.

The previous prime is 1918627439. The next prime is 1918627471. The reversal of 1918627442 is 2447268191.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1918627442² = 7362262522390926728, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1918627393 and 1918627402.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3176234 + ... + 3176837.

It is an arithmetic number, because the mean of its divisors is an integer number (362125104).

Almost surely, 2^1918627442 is an apocalyptic number.

1918627442 is a deficient number, since it is larger than the sum of its proper divisors (978373390).

1918627442 is a wasteful number, since it uses less digits than its factorization.

1918627442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6353224.

The product of its digits is 193536, while the sum is 44.

The square root of 1918627442 is about 43802.1396965947. The cubic root of 1918627442 is about 1242.5967611651.

The spelling of 1918627442 in words is "one billion, nine hundred eighteen million, six hundred twenty-seven thousand, four hundred forty-two".