1640488153 has 8 divisors (see below), whose sum is σ = 1714555080. Its totient is φ = 1567587840.

The previous prime is 1640488123. The next prime is 1640488181. The reversal of 1640488153 is 3518840461.

It can be written as a sum of positive squares in 4 ways, for example, as 21874329 + 1618613824 = 4677^2 + 40232^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1640488153 - 2¹³ = 1640479961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1640488103) 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, 288778 + ... + 294403.

It is an arithmetic number, because the mean of its divisors is an integer number (214319385).

Almost surely, 2^1640488153 is an apocalyptic number.

It is an amenable number.

1640488153 is a deficient number, since it is larger than the sum of its proper divisors (74066927).

1640488153 is an equidigital number, since it uses as much as digits as its factorization.

1640488153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 583307.

The product of its (nonzero) digits is 92160, while the sum is 40.

The square root of 1640488153 is about 40502.9400537788. The cubic root of 1640488153 is about 1179.3907016712.

The spelling of 1640488153 in words is "one billion, six hundred forty million, four hundred eighty-eight thousand, one hundred fifty-three".