1026778346 has 16 divisors (see below), whose sum is σ = 1685562048. Its totient is φ = 465223200.

The previous prime is 1026778343. The next prime is 1026778367. The reversal of 1026778346 is 6438776201.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1026778297 and 1026778306.

It is not an unprimeable number, because it can be changed into a prime (1026778343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67670 + ... + 81441.

It is an arithmetic number, because the mean of its divisors is an integer number (105347628).

Almost surely, 2^1026778346 is an apocalyptic number.

1026778346 is a deficient number, since it is larger than the sum of its proper divisors (658783702).

1026778346 is a wasteful number, since it uses less digits than its factorization.

1026778346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149437.

The product of its (nonzero) digits is 338688, while the sum is 44.

The square root of 1026778346 is about 32043.3822496939. The cubic root of 1026778346 is about 1008.8476043665.

The spelling of 1026778346 in words is "one billion, twenty-six million, seven hundred seventy-eight thousand, three hundred forty-six".