1778130342 has 12 divisors (see below), whose sum is σ = 3852615780. Its totient is φ = 592710108.

The previous prime is 1778130323. The next prime is 1778130373. The reversal of 1778130342 is 2430318771.

It is a junction number, because it is equal to n+sod(n) for n = 1778130297 and 1778130306.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 49392492 + ... + 49392527.

It is an arithmetic number, because the mean of its divisors is an integer number (321051315).

Almost surely, 2^1778130342 is an apocalyptic number.

1778130342 is an abundant number, since it is smaller than the sum of its proper divisors (2074485438).

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

1778130342 is a wasteful number, since it uses less digits than its factorization.

1778130342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98785027 (or 98785024 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 36.

The square root of 1778130342 is about 42167.8828256767. The cubic root of 1778130342 is about 1211.4938047251.

The spelling of 1778130342 in words is "one billion, seven hundred seventy-eight million, one hundred thirty thousand, three hundred forty-two".