1786794643940 has 12 divisors (see below), whose sum is σ = 3752268752316. Its totient is φ = 714717857568.

The previous prime is 1786794643889. The next prime is 1786794643951. The reversal of 1786794643940 is 493464976871.

It can be written as a sum of positive squares in 2 ways, for example, as 1398807674944 + 387986968996 = 1182712^2 + 622886^2 .

It is a super-2 number, since 2×1786794643940² (a number of 25 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (68) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44669866079 + ... + 44669866118.

It is an arithmetic number, because the mean of its divisors is an integer number (312689062693).

Almost surely, 2^{1786794643940} is an apocalyptic number.

1786794643940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1786794643940 is an abundant number, since it is smaller than the sum of its proper divisors (1965474108376).

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

1786794643940 is a wasteful number, since it uses less digits than its factorization.

1786794643940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89339732206 (or 89339732204 counting only the distinct ones).

The product of its (nonzero) digits is 219469824, while the sum is 68.

The spelling of 1786794643940 in words is "one trillion, seven hundred eighty-six billion, seven hundred ninety-four million, six hundred forty-three thousand, nine hundred forty".