1640219159 has 2 divisors, whose sum is σ = 1640219160. Its totient is φ = 1640219158.

The previous prime is 1640219131. The next prime is 1640219183. The reversal of 1640219159 is 9519120461.

It is a strong prime.

It is an emirp because it is prime and its reverse (9519120461) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1640219159 - 2⁸ = 1640218903 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1640219129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 820109579 + 820109580.

It is an arithmetic number, because the mean of its divisors is an integer number (820109580).

Almost surely, 2^1640219159 is an apocalyptic number.

1640219159 is a deficient number, since it is larger than the sum of its proper divisors (1).

1640219159 is an equidigital number, since it uses as much as digits as its factorization.

1640219159 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19440, while the sum is 38.

The square root of 1640219159 is about 40499.6192451238. The cubic root of 1640219159 is about 1179.3262358264.

The spelling of 1640219159 in words is "one billion, six hundred forty million, two hundred nineteen thousand, one hundred fifty-nine".