1051344778 has 16 divisors (see below), whose sum is σ = 1721071296. Its totient is φ = 477692640.

The previous prime is 1051344773. The next prime is 1051344779. The reversal of 1051344778 is 8774431501.

It is a happy number.

It is a super-2 number, since 2×1051344778² = 2210651684455738568, 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 1051344778.

It is not an unprimeable number, because it can be changed into a prime (1051344773) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56875 + ... + 73057.

It is an arithmetic number, because the mean of its divisors is an integer number (107566956).

Almost surely, 2^1051344778 is an apocalyptic number.

1051344778 is a deficient number, since it is larger than the sum of its proper divisors (669726518).

1051344778 is a wasteful number, since it uses less digits than its factorization.

1051344778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19149.

The product of its (nonzero) digits is 94080, while the sum is 40.

The square root of 1051344778 is about 32424.4472273623. The cubic root of 1051344778 is about 1016.8300851823.

The spelling of 1051344778 in words is "one billion, fifty-one million, three hundred forty-four thousand, seven hundred seventy-eight".