1051778411 has 4 divisors (see below), whose sum is σ = 1055871192. Its totient is φ = 1047685632.

The previous prime is 1051778401. The next prime is 1051778417. The reversal of 1051778411 is 1148771501.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1148771501 = 23 ⋅49946587.

It is a cyclic number.

It is not a de Polignac number, because 1051778411 - 2¹⁸ = 1051516267 is a prime.

It is a super-2 number, since 2×1051778411² = 2212475651691369842, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1051778417) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 2046005 + ... + 2046518.

It is an arithmetic number, because the mean of its divisors is an integer number (263967798).

Almost surely, 2^1051778411 is an apocalyptic number.

1051778411 is a deficient number, since it is larger than the sum of its proper divisors (4092781).

1051778411 is an equidigital number, since it uses as much as digits as its factorization.

1051778411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4092780.

The product of its (nonzero) digits is 7840, while the sum is 35.

The square root of 1051778411 is about 32431.1333597825. The cubic root of 1051778411 is about 1016.9698650407.

The spelling of 1051778411 in words is "one billion, fifty-one million, seven hundred seventy-eight thousand, four hundred eleven".