1565796642 has 32 divisors (see below), whose sum is σ = 3215165184. Its totient is φ = 508060800.

The previous prime is 1565796641. The next prime is 1565796643. The reversal of 1565796642 is 2466975651.

It is an interprime number because it is at equal distance from previous prime (1565796641) and next prime (1565796643).

It is not an unprimeable number, because it can be changed into a prime (1565796641) 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 in 15 ways as a sum of consecutive naturals, for example, 106503 + ... + 120309.

It is an arithmetic number, because the mean of its divisors is an integer number (100473912).

Almost surely, 2^1565796642 is an apocalyptic number.

1565796642 is an abundant number, since it is smaller than the sum of its proper divisors (1649368542).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1565796642 is a wasteful number, since it uses less digits than its factorization.

1565796642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14314.

The product of its digits is 2721600, while the sum is 51.

The square root of 1565796642 is about 39570.1483696991. The cubic root of 1565796642 is about 1161.2127234905.

The spelling of 1565796642 in words is "one billion, five hundred sixty-five million, seven hundred ninety-six thousand, six hundred forty-two".