1620492052939 has 2 divisors, whose sum is σ = 1620492052940. Its totient is φ = 1620492052938.

The previous prime is 1620492052937. The next prime is 1620492052957. The reversal of 1620492052939 is 9392502940261.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1620492052939 - 2¹ = 1620492052937 is a prime.

Together with 1620492052937, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1620492052937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 810246026469 + 810246026470.

It is an arithmetic number, because the mean of its divisors is an integer number (810246026470).

Almost surely, 2^{1620492052939} is an apocalyptic number.

1620492052939 is a deficient number, since it is larger than the sum of its proper divisors (1).

1620492052939 is an equidigital number, since it uses as much as digits as its factorization.

1620492052939 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2099520, while the sum is 52.

The spelling of 1620492052939 in words is "one trillion, six hundred twenty billion, four hundred ninety-two million, fifty-two thousand, nine hundred thirty-nine".