1011781934 has 4 divisors (see below), whose sum is σ = 1517672904. Its totient is φ = 505890966.

The previous prime is 1011781931. The next prime is 1011782003. The reversal of 1011781934 is 4391871101.

1011781934 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, and also an emirpimes, since its reverse is a distinct semiprime: 4391871101 = 15377 ⋅285613.

It is a junction number, because it is equal to n+sod(n) for n = 1011781894 and 1011781903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011781931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252945482 + ... + 252945485.

It is an arithmetic number, because the mean of its divisors is an integer number (379418226).

Almost surely, 2^1011781934 is an apocalyptic number.

1011781934 is a deficient number, since it is larger than the sum of its proper divisors (505890970).

1011781934 is an equidigital number, since it uses as much as digits as its factorization.

1011781934 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 505890969.

The product of its (nonzero) digits is 6048, while the sum is 35.

The square root of 1011781934 is about 31808.5198335289. The cubic root of 1011781934 is about 1003.9119877294.

The spelling of 1011781934 in words is "one billion, eleven million, seven hundred eighty-one thousand, nine hundred thirty-four".