1640254153 has 2 divisors, whose sum is σ = 1640254154. Its totient is φ = 1640254152.

The previous prime is 1640254139. The next prime is 1640254171. The reversal of 1640254153 is 3514520461.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1136161849 + 504092304 = 33707^2 + 22452^2 .

It is an emirp because it is prime and its reverse (3514520461) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1640254153 - 2¹⁷ = 1640123081 is a prime.

It is not a weakly prime, because it can be changed into another prime (1640254183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 820127076 + 820127077.

It is an arithmetic number, because the mean of its divisors is an integer number (820127077).

Almost surely, 2^1640254153 is an apocalyptic number.

It is an amenable number.

1640254153 is a deficient number, since it is larger than the sum of its proper divisors (1).

1640254153 is an equidigital number, since it uses as much as digits as its factorization.

1640254153 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 1640254153 is about 40500.0512715725. The cubic root of 1640254153 is about 1179.3346227237.

The spelling of 1640254153 in words is "one billion, six hundred forty million, two hundred fifty-four thousand, one hundred fifty-three".