1970218379 has 2 divisors, whose sum is σ = 1970218380. Its totient is φ = 1970218378.

The previous prime is 1970218373. The next prime is 1970218399. The reversal of 1970218379 is 9738120791.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1970218379 - 2⁴ = 1970218363 is a prime.

It is not a weakly prime, because it can be changed into another prime (1970218373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 985109189 + 985109190.

It is an arithmetic number, because the mean of its divisors is an integer number (985109190).

Almost surely, 2^1970218379 is an apocalyptic number.

1970218379 is a deficient number, since it is larger than the sum of its proper divisors (1).

1970218379 is an equidigital number, since it uses as much as digits as its factorization.

1970218379 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 190512, while the sum is 47.

The square root of 1970218379 is about 44387.1420458673. The cubic root of 1970218379 is about 1253.6360008633.

The spelling of 1970218379 in words is "one billion, nine hundred seventy million, two hundred eighteen thousand, three hundred seventy-nine".