1053542778 has 16 divisors (see below), whose sum is σ = 2114534496. Its totient is φ = 349939440.

The previous prime is 1053542771. The next prime is 1053542779. The reversal of 1053542778 is 8772453501.

It is a super-3 number, since 3×1053542778³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1053542771) 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 7 ways as a sum of consecutive naturals, for example, 308533 + ... + 311928.

It is an arithmetic number, because the mean of its divisors is an integer number (132158406).

Almost surely, 2^1053542778 is an apocalyptic number.

1053542778 is an abundant number, since it is smaller than the sum of its proper divisors (1060991718).

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

1053542778 is a wasteful number, since it uses less digits than its factorization.

1053542778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 620749.

The product of its (nonzero) digits is 235200, while the sum is 42.

The square root of 1053542778 is about 32458.3237090272. The cubic root of 1053542778 is about 1017.5382058189.

The spelling of 1053542778 in words is "one billion, fifty-three million, five hundred forty-two thousand, seven hundred seventy-eight".