1620130667 has 2 divisors, whose sum is σ = 1620130668. Its totient is φ = 1620130666.

The previous prime is 1620130663. The next prime is 1620130709. The reversal of 1620130667 is 7660310261.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1620130667 - 2² = 1620130663 is a prime.

It is not a weakly prime, because it can be changed into another prime (1620130663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 810065333 + 810065334.

It is an arithmetic number, because the mean of its divisors is an integer number (810065334).

Almost surely, 2^1620130667 is an apocalyptic number.

1620130667 is a deficient number, since it is larger than the sum of its proper divisors (1).

1620130667 is an equidigital number, since it uses as much as digits as its factorization.

1620130667 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 1620130667 is about 40250.8467861236. The cubic root of 1620130667 is about 1174.4918682925.

The spelling of 1620130667 in words is "one billion, six hundred twenty million, one hundred thirty thousand, six hundred sixty-seven".