1046278778 has 16 divisors (see below), whose sum is σ = 1592105856. Its totient is φ = 515587680.

The previous prime is 1046278747. The next prime is 1046278781. The reversal of 1046278778 is 8778726401.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 388625 + ... + 391307.

It is an arithmetic number, because the mean of its divisors is an integer number (99506616).

Almost surely, 2^1046278778 is an apocalyptic number.

1046278778 is a deficient number, since it is larger than the sum of its proper divisors (545827078).

1046278778 is a wasteful number, since it uses less digits than its factorization.

1046278778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5429.

The product of its (nonzero) digits is 1053696, while the sum is 50.

The square root of 1046278778 is about 32346.2328254775. The cubic root of 1046278778 is about 1015.1942255735.

The spelling of 1046278778 in words is "one billion, forty-six million, two hundred seventy-eight thousand, seven hundred seventy-eight".