1920765535 has 16 divisors (see below), whose sum is σ = 2590144704. Its totient is φ = 1356740352.

The previous prime is 1920765493. The next prime is 1920765541. The reversal of 1920765535 is 5355670291.

It is a cyclic number.

It is not a de Polignac number, because 1920765535 - 2¹⁹ = 1920241247 is a prime.

It is a super-4 number, since 4×1920765535⁴ (a number of 38 digits) contains 4444 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1920765491 and 1920765500.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 640902 + ... + 643891.

It is an arithmetic number, because the mean of its divisors is an integer number (161884044).

Almost surely, 2^1920765535 is an apocalyptic number.

1920765535 is a deficient number, since it is larger than the sum of its proper divisors (669379169).

1920765535 is a wasteful number, since it uses less digits than its factorization.

1920765535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1284834.

The product of its (nonzero) digits is 283500, while the sum is 43.

The square root of 1920765535 is about 43826.5391629319. The cubic root of 1920765535 is about 1243.0581676013.

The spelling of 1920765535 in words is "one billion, nine hundred twenty million, seven hundred sixty-five thousand, five hundred thirty-five".