1027686381490 has 8 divisors (see below), whose sum is σ = 1849835486700. Its totient is φ = 411074552592.

The previous prime is 1027686381439. The next prime is 1027686381619. The reversal of 1027686381490 is 941836867201.

It can be written as a sum of positive squares in 2 ways, for example, as 985328213769 + 42358167721 = 992637^2 + 205811^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1027686381490² (a number of 25 digits) contains 22 as substring.

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, 51384319065 + ... + 51384319084.

Almost surely, 2^{1027686381490} is an apocalyptic number.

1027686381490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1027686381490 is a deficient number, since it is larger than the sum of its proper divisors (822149105210).

1027686381490 is a wasteful number, since it uses less digits than its factorization.

1027686381490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102768638156.

The product of its (nonzero) digits is 3483648, while the sum is 55.

The spelling of 1027686381490 in words is "one trillion, twenty-seven billion, six hundred eighty-six million, three hundred eighty-one thousand, four hundred ninety".