1652788399 has 6 divisors (see below), whose sum is σ = 1755730544. Its totient is φ = 1555565280.

The previous prime is 1652788381. The next prime is 1652788421. The reversal of 1652788399 is 9938872561.

It is not a de Polignac number, because 1652788399 - 2¹⁵ = 1652755631 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 (1652788099) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2859207 + ... + 2859784.

Almost surely, 2^1652788399 is an apocalyptic number.

1652788399 is a deficient number, since it is larger than the sum of its proper divisors (102942145).

1652788399 is an equidigital number, since it uses as much as digits as its factorization.

1652788399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5719025 (or 5719008 counting only the distinct ones).

The product of its digits is 6531840, while the sum is 58.

The square root of 1652788399 is about 40654.5003535894. The cubic root of 1652788399 is about 1182.3310234466.

The spelling of 1652788399 in words is "one billion, six hundred fifty-two million, seven hundred eighty-eight thousand, three hundred ninety-nine".