1051978633 has 2 divisors, whose sum is σ = 1051978634. Its totient is φ = 1051978632.

The previous prime is 1051978619. The next prime is 1051978661. The reversal of 1051978633 is 3368791501.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 979251849 + 72726784 = 31293^2 + 8528^2 .

It is an emirp because it is prime and its reverse (3368791501) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1051978633 - 2²⁵ = 1018424201 is a prime.

It is a super-2 number, since 2×1051978633² = 2213318088577097378, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1051978633.

It is not a weakly prime, because it can be changed into another prime (1051978663) 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 as a sum of consecutive naturals, namely, 525989316 + 525989317.

It is an arithmetic number, because the mean of its divisors is an integer number (525989317).

Almost surely, 2^1051978633 is an apocalyptic number.

It is an amenable number.

1051978633 is a deficient number, since it is larger than the sum of its proper divisors (1).

1051978633 is an equidigital number, since it uses as much as digits as its factorization.

1051978633 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 136080, while the sum is 43.

The square root of 1051978633 is about 32434.2200923654. The cubic root of 1051978633 is about 1017.0343928344.

The spelling of 1051978633 in words is "one billion, fifty-one million, nine hundred seventy-eight thousand, six hundred thirty-three".