1640219163 has 8 divisors (see below), whose sum is σ = 2385773376. Its totient is φ = 994072200.

The previous prime is 1640219159. The next prime is 1640219183. The reversal of 1640219163 is 3619120461.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1640219163 - 2² = 1640219159 is a prime.

It is a super-3 number, since 3×1640219163³ (a number of 29 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 49703611 = 1640219163 / (1 + 6 + 4 + 0 + 2 + 1 + 9 + 1 + 6 + 3).

It is not an unprimeable number, because it can be changed into a prime (1640219123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24851773 + ... + 24851838.

It is an arithmetic number, because the mean of its divisors is an integer number (298221672).

Almost surely, 2^1640219163 is an apocalyptic number.

1640219163 is a deficient number, since it is larger than the sum of its proper divisors (745554213).

1640219163 is a wasteful number, since it uses less digits than its factorization.

1640219163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49703625.

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 1640219163 is about 40499.6192945070. The cubic root of 1640219163 is about 1179.3262367851.

The spelling of 1640219163 in words is "one billion, six hundred forty million, two hundred nineteen thousand, one hundred sixty-three".