1011779423 has 4 divisors (see below), whose sum is σ = 1011856728. Its totient is φ = 1011702120.

The previous prime is 1011779413. The next prime is 1011779437. The reversal of 1011779423 is 3249771101.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 3249771101 = 9533 ⋅340897.

It is a cyclic number.

It is not a de Polignac number, because 1011779423 - 2⁶ = 1011779359 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011779413) 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, 13613 + ... + 46998.

It is an arithmetic number, because the mean of its divisors is an integer number (252964182).

Almost surely, 2^1011779423 is an apocalyptic number.

1011779423 is a deficient number, since it is larger than the sum of its proper divisors (77305).

1011779423 is an equidigital number, since it uses as much as digits as its factorization.

1011779423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77304.

The product of its (nonzero) digits is 10584, while the sum is 35.

The square root of 1011779423 is about 31808.4803629472. The cubic root of 1011779423 is about 1003.9111572392.

The spelling of 1011779423 in words is "one billion, eleven million, seven hundred seventy-nine thousand, four hundred twenty-three".