1056978722 has 16 divisors (see below), whose sum is σ = 1604151000. Its totient is φ = 522289152.

The previous prime is 1056978719. The next prime is 1056978739. The reversal of 1056978722 is 2278796501.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 417344041 + 639634681 = 20429^2 + 25291^2 .

It is a super-2 number, since 2×1056978722² = 2234408037521506568, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73154 + ... + 86402.

Almost surely, 2^1056978722 is an apocalyptic number.

1056978722 is a deficient number, since it is larger than the sum of its proper divisors (547172278).

1056978722 is a wasteful number, since it uses less digits than its factorization.

1056978722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13717.

The product of its (nonzero) digits is 423360, while the sum is 47.

The square root of 1056978722 is about 32511.2091746831. The cubic root of 1056978722 is about 1018.6431792749.

The spelling of 1056978722 in words is "one billion, fifty-six million, nine hundred seventy-eight thousand, seven hundred twenty-two".