1010890765 has 4 divisors (see below), whose sum is σ = 1213068924. Its totient is φ = 808712608.

The previous prime is 1010890759. The next prime is 1010890813. The reversal of 1010890765 is 5670980101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5670980101 = 487 ⋅11644723.

It can be written as a sum of positive squares in 2 ways, for example, as 597215844 + 413674921 = 24438^2 + 20339^2 .

It is a cyclic number.

It is not a de Polignac number, because 1010890765 - 2⁷ = 1010890637 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 (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101089072 + ... + 101089081.

It is an arithmetic number, because the mean of its divisors is an integer number (303267231).

Almost surely, 2^1010890765 is an apocalyptic number.

It is an amenable number.

1010890765 is a deficient number, since it is larger than the sum of its proper divisors (202178159).

1010890765 is an equidigital number, since it uses as much as digits as its factorization.

1010890765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202178158.

The product of its (nonzero) digits is 15120, while the sum is 37.

The square root of 1010890765 is about 31794.5084094722. The cubic root of 1010890765 is about 1003.6171554113.

The spelling of 1010890765 in words is "one billion, ten million, eight hundred ninety thousand, seven hundred sixty-five".