1640414255 has 4 divisors (see below), whose sum is σ = 1968497112. Its totient is φ = 1312331400.

The previous prime is 1640414231. The next prime is 1640414263. The reversal of 1640414255 is 5524140461.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1640414255 - 2¹² = 1640410159 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 164041421 + ... + 164041430.

It is an arithmetic number, because the mean of its divisors is an integer number (492124278).

Almost surely, 2^1640414255 is an apocalyptic number.

1640414255 is a deficient number, since it is larger than the sum of its proper divisors (328082857).

1640414255 is an equidigital number, since it uses as much as digits as its factorization.

1640414255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328082856.

The product of its (nonzero) digits is 19200, while the sum is 32.

The square root of 1640414255 is about 40502.0277887416. The cubic root of 1640414255 is about 1179.3729923240.

The spelling of 1640414255 in words is "one billion, six hundred forty million, four hundred fourteen thousand, two hundred fifty-five".