1984140925913 has 2 divisors, whose sum is σ = 1984140925914. Its totient is φ = 1984140925912.

The previous prime is 1984140925901. The next prime is 1984140925931. The reversal of 1984140925913 is 3195290414891.

Together with next prime (1984140925931) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1956521145049 + 27619780864 = 1398757^2 + 166192^2 .

It is a cyclic number.

It is not a de Polignac number, because 1984140925913 - 2³⁶ = 1915421449177 is a prime.

It is not a weakly prime, because it can be changed into another prime (1984140925993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 992070462956 + 992070462957.

It is an arithmetic number, because the mean of its divisors is an integer number (992070462957).

Almost surely, 2^{1984140925913} is an apocalyptic number.

It is an amenable number.

1984140925913 is a deficient number, since it is larger than the sum of its proper divisors (1).

1984140925913 is an equidigital number, since it uses as much as digits as its factorization.

1984140925913 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2799360, while the sum is 56.

The spelling of 1984140925913 in words is "one trillion, nine hundred eighty-four billion, one hundred forty million, nine hundred twenty-five thousand, nine hundred thirteen".