1958076871979 has 2 divisors, whose sum is σ = 1958076871980. Its totient is φ = 1958076871978.

The previous prime is 1958076871957. The next prime is 1958076871997. The reversal of 1958076871979 is 9791786708591.

Together with next prime (1958076871997) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1958076871979 is a prime.

It is not a weakly prime, because it can be changed into another prime (1958076871909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 979038435989 + 979038435990.

It is an arithmetic number, because the mean of its divisors is an integer number (979038435990).

Almost surely, 2^{1958076871979} is an apocalyptic number.

1958076871979 is a deficient number, since it is larger than the sum of its proper divisors (1).

1958076871979 is an equidigital number, since it uses as much as digits as its factorization.

1958076871979 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 480090240, while the sum is 77.

The spelling of 1958076871979 in words is "one trillion, nine hundred fifty-eight billion, seventy-six million, eight hundred seventy-one thousand, nine hundred seventy-nine".