1802428565 has 16 divisors (see below), whose sum is σ = 2477332992. Its totient is φ = 1233235584.

The previous prime is 1802428547. The next prime is 1802428643. The reversal of 1802428565 is 5658242081.

It is a happy number.

It is not a de Polignac number, because 1802428565 - 2⁶ = 1802428501 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 15 ways as a sum of consecutive naturals, for example, 40349 + ... + 72338.

It is an arithmetic number, because the mean of its divisors is an integer number (154833312).

Almost surely, 2^1802428565 is an apocalyptic number.

It is an amenable number.

1802428565 is a deficient number, since it is larger than the sum of its proper divisors (674904427).

1802428565 is a wasteful number, since it uses less digits than its factorization.

1802428565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113156.

The product of its (nonzero) digits is 153600, while the sum is 41.

The square root of 1802428565 is about 42455.0181368469. The cubic root of 1802428565 is about 1216.9872281824.

The spelling of 1802428565 in words is "one billion, eight hundred two million, four hundred twenty-eight thousand, five hundred sixty-five".