1992418 has 4 divisors (see below), whose sum is σ = 2988630. Its totient is φ = 996208.

The previous prime is 1992409. The next prime is 1992433. The reversal of 1992418 is 8142991.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8142991 = 163 ⋅49957.

It can be written as a sum of positive squares in only one way, i.e., 1979649 + 12769 = 1407^2 + 113^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 498103 + ... + 498106.

2^1992418 is an apocalyptic number.

1992418 is a deficient number, since it is larger than the sum of its proper divisors (996212).

1992418 is an equidigital number, since it uses as much as digits as its factorization.

1992418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 996211.

The product of its digits is 5184, while the sum is 34.

The square root of 1992418 is about 1411.5303751602. The cubic root of 1992418 is about 125.8326913504.

The spelling of 1992418 in words is "one million, nine hundred ninety-two thousand, four hundred eighteen".