620135989019 has 2 divisors, whose sum is σ = 620135989020. Its totient is φ = 620135989018.

The previous prime is 620135989003. The next prime is 620135989037. The reversal of 620135989019 is 910989531026.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 620135989019 - 2⁴ = 620135989003 is a prime.

It is a super-2 number, since 2×620135989019² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (620135949019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 310067994509 + 310067994510.

It is an arithmetic number, because the mean of its divisors is an integer number (310067994510).

Almost surely, 2^620135989019 is an apocalyptic number.

620135989019 is a deficient number, since it is larger than the sum of its proper divisors (1).

620135989019 is an equidigital number, since it uses as much as digits as its factorization.

620135989019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1049760, while the sum is 53.

The spelling of 620135989019 in words is "six hundred twenty billion, one hundred thirty-five million, nine hundred eighty-nine thousand, nineteen".