1778138010348 has 96 divisors (see below), whose sum is σ = 4975199523840. Its totient is φ = 483265854720.

The previous prime is 1778138010329. The next prime is 1778138010377. The reversal of 1778138010348 is 8430108318771.

It is a super-2 number, since 2×1778138010348² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1778138010348.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2192743 + ... + 2892126.

It is an arithmetic number, because the mean of its divisors is an integer number (51824995040).

Almost surely, 2^{1778138010348} is an apocalyptic number.

It is an amenable number.

1778138010348 is an abundant number, since it is smaller than the sum of its proper divisors (3197061513492).

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

1778138010348 is a wasteful number, since it uses less digits than its factorization.

1778138010348 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5085087 (or 5085085 counting only the distinct ones).

The product of its (nonzero) digits is 903168, while the sum is 51.

The spelling of 1778138010348 in words is "one trillion, seven hundred seventy-eight billion, one hundred thirty-eight million, ten thousand, three hundred forty-eight".