1019796641 has 4 divisors (see below), whose sum is σ = 1033766532. Its totient is φ = 1005826752.

The previous prime is 1019796619. The next prime is 1019796653. The reversal of 1019796641 is 1466979101.

It is a happy number.

1019796641 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 607869025 + 411927616 = 24655^2 + 20296^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1019796641 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1019796592 and 1019796601.

It is not an unprimeable number, because it can be changed into a prime (1019796611) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6984836 + ... + 6984981.

It is an arithmetic number, because the mean of its divisors is an integer number (258441633).

Almost surely, 2^1019796641 is an apocalyptic number.

It is an amenable number.

1019796641 is a deficient number, since it is larger than the sum of its proper divisors (13969891).

1019796641 is an equidigital number, since it uses as much as digits as its factorization.

1019796641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13969890.

The product of its (nonzero) digits is 81648, while the sum is 44.

The square root of 1019796641 is about 31934.2549780013. The cubic root of 1019796641 is about 1006.5558077976. Note that the first 3 decimals are identical.

The spelling of 1019796641 in words is "one billion, nineteen million, seven hundred ninety-six thousand, six hundred forty-one".