1620000499993 has 2 divisors, whose sum is σ = 1620000499994. Its totient is φ = 1620000499992.

The previous prime is 1620000499967. The next prime is 1620000500093. The reversal of 1620000499993 is 3999940000261.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1039557650569 + 580442849424 = 1019587^2 + 761868^2 .

It is a cyclic number.

It is not a de Polignac number, because 1620000499993 - 2²⁵ = 1619966945561 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1620000499993.

It is not a weakly prime, because it can be changed into another prime (1620000419993) 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, 810000249996 + 810000249997.

It is an arithmetic number, because the mean of its divisors is an integer number (810000249997).

Almost surely, 2^{1620000499993} is an apocalyptic number.

It is an amenable number.

1620000499993 is a deficient number, since it is larger than the sum of its proper divisors (1).

1620000499993 is an equidigital number, since it uses as much as digits as its factorization.

1620000499993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 944784, while the sum is 52.

The spelling of 1620000499993 in words is "one trillion, six hundred twenty billion, four hundred ninety-nine thousand, nine hundred ninety-three".