1051919778 has 64 divisors (see below), whose sum is σ = 2741679360. Its totient is φ = 261107712.

The previous prime is 1051919723. The next prime is 1051919797. The reversal of 1051919778 is 8779191501.

1051919778 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×1051919778² = 2213070438695138568, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 47383 + ... + 65946.

It is an arithmetic number, because the mean of its divisors is an integer number (42838740).

Almost surely, 2^1051919778 is an apocalyptic number.

1051919778 is an abundant number, since it is smaller than the sum of its proper divisors (1689759582).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1051919778 is a wasteful number, since it uses less digits than its factorization.

1051919778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113371.

The product of its (nonzero) digits is 158760, while the sum is 48.

The square root of 1051919778 is about 32433.3127817681. The cubic root of 1051919778 is about 1017.0154258220.

The spelling of 1051919778 in words is "one billion, fifty-one million, nine hundred nineteen thousand, seven hundred seventy-eight".