162020839 has 2 divisors, whose sum is σ = 162020840. Its totient is φ = 162020838.

The previous prime is 162020821. The next prime is 162020879. The reversal of 162020839 is 938020261.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-162020839 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 162020839.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (162020879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81010419 + 81010420.

It is an arithmetic number, because the mean of its divisors is an integer number (81010420).

Almost surely, 2^162020839 is an apocalyptic number.

162020839 is a deficient number, since it is larger than the sum of its proper divisors (1).

162020839 is an equidigital number, since it uses as much as digits as its factorization.

162020839 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 162020839 is about 12728.7406682672. The cubic root of 162020839 is about 545.1595515240.

The spelling of 162020839 in words is "one hundred sixty-two million, twenty thousand, eight hundred thirty-nine".