1918842967 has 2 divisors, whose sum is σ = 1918842968. Its totient is φ = 1918842966.

The previous prime is 1918842953. The next prime is 1918843013. The reversal of 1918842967 is 7692488191.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1918842967 - 2⁷ = 1918842839 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1918842467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 959421483 + 959421484.

It is an arithmetic number, because the mean of its divisors is an integer number (959421484).

Almost surely, 2^1918842967 is an apocalyptic number.

1918842967 is a deficient number, since it is larger than the sum of its proper divisors (1).

1918842967 is an equidigital number, since it uses as much as digits as its factorization.

1918842967 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1741824, while the sum is 55.

The square root of 1918842967 is about 43804.5998383731. The cubic root of 1918842967 is about 1242.6432875923.

The spelling of 1918842967 in words is "one billion, nine hundred eighteen million, eight hundred forty-two thousand, nine hundred sixty-seven".