1952947799987 has 2 divisors, whose sum is σ = 1952947799988. Its totient is φ = 1952947799986.

The previous prime is 1952947799983. The next prime is 1952947799993. The reversal of 1952947799987 is 7899977492591.

It is a weak prime.

It is an emirp because it is prime and its reverse (7899977492591) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1952947799987 - 2² = 1952947799983 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1952947799899 and 1952947799908.

It is not a weakly prime, because it can be changed into another prime (1952947799981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 976473899993 + 976473899994.

It is an arithmetic number, because the mean of its divisors is an integer number (976473899994).

Almost surely, 2^{1952947799987} is an apocalyptic number.

1952947799987 is a deficient number, since it is larger than the sum of its proper divisors (1).

1952947799987 is an equidigital number, since it uses as much as digits as its factorization.

1952947799987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6481218240, while the sum is 86.

The spelling of 1952947799987 in words is "one trillion, nine hundred fifty-two billion, nine hundred forty-seven million, seven hundred ninety-nine thousand, nine hundred eighty-seven".