1654949365 has 4 divisors (see below), whose sum is σ = 1985939244. Its totient is φ = 1323959488.

The previous prime is 1654949363. The next prime is 1654949369. The reversal of 1654949365 is 5639494561.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5639494561 = 733 ⋅7693717.

It can be written as a sum of positive squares in 2 ways, for example, as 1318997124 + 335952241 = 36318^2 + 18329^2 .

It is a cyclic number.

It is not a de Polignac number, because 1654949365 - 2¹ = 1654949363 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1654949363) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 165494932 + ... + 165494941.

It is an arithmetic number, because the mean of its divisors is an integer number (496484811).

Almost surely, 2^1654949365 is an apocalyptic number.

It is an amenable number.

1654949365 is a deficient number, since it is larger than the sum of its proper divisors (330989879).

1654949365 is an equidigital number, since it uses as much as digits as its factorization.

1654949365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330989878.

The product of its digits is 3499200, while the sum is 52.

The square root of 1654949365 is about 40681.0688773046. The cubic root of 1654949365 is about 1182.8460852327.

The spelling of 1654949365 in words is "one billion, six hundred fifty-four million, nine hundred forty-nine thousand, three hundred sixty-five".