1918979 has 2 divisors, whose sum is σ = 1918980. Its totient is φ = 1918978.

The previous prime is 1918967. The next prime is 1918991. The reversal of 1918979 is 9798191.

It is a balanced prime because it is at equal distance from previous prime (1918967) and next prime (1918991).

It is a cyclic number.

It is not a de Polignac number, because 1918979 - 2¹² = 1914883 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1918919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 959489 + 959490.

It is an arithmetic number, because the mean of its divisors is an integer number (959490).

2^1918979 is an apocalyptic number.

1918979 is a deficient number, since it is larger than the sum of its proper divisors (1).

1918979 is an equidigital number, since it uses as much as digits as its factorization.

1918979 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40824, while the sum is 44.

The square root of 1918979 is about 1385.2721754226. The cubic root of 1918979 is about 124.2672651902.

The spelling of 1918979 in words is "one million, nine hundred eighteen thousand, nine hundred seventy-nine".