1778740748 has 12 divisors (see below), whose sum is σ = 3113816160. Its totient is φ = 889078992.

The previous prime is 1778740729. The next prime is 1778740751. The reversal of 1778740748 is 8470478771.

It is a self number, because there is not a number n which added to its sum of digits gives 1778740748.

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 3 ways as a sum of consecutive naturals, for example, 58811 + ... + 83762.

It is an arithmetic number, because the mean of its divisors is an integer number (259484680).

Almost surely, 2^1778740748 is an apocalyptic number.

It is an amenable number.

1778740748 is a deficient number, since it is larger than the sum of its proper divisors (1335075412).

1778740748 is a wasteful number, since it uses less digits than its factorization.

1778740748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145696 (or 145694 counting only the distinct ones).

The product of its (nonzero) digits is 2458624, while the sum is 53.

The square root of 1778740748 is about 42175.1200116846. The cubic root of 1778740748 is about 1211.6324182012.

The spelling of 1778740748 in words is "one billion, seven hundred seventy-eight million, seven hundred forty thousand, seven hundred forty-eight".