1859420914979 has 2 divisors, whose sum is σ = 1859420914980. Its totient is φ = 1859420914978.

The previous prime is 1859420914973. The next prime is 1859420915017. The reversal of 1859420914979 is 9794190249581.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1859420914979 - 2¹² = 1859420910883 is a prime.

It is a super-2 number, since 2×1859420914979² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1859420914973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 929710457489 + 929710457490.

It is an arithmetic number, because the mean of its divisors is an integer number (929710457490).

Almost surely, 2^{1859420914979} is an apocalyptic number.

1859420914979 is a deficient number, since it is larger than the sum of its proper divisors (1).

1859420914979 is an equidigital number, since it uses as much as digits as its factorization.

1859420914979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 58786560, while the sum is 68.

The spelling of 1859420914979 in words is "one trillion, eight hundred fifty-nine billion, four hundred twenty million, nine hundred fourteen thousand, nine hundred seventy-nine".