1427970790381 has 2 divisors, whose sum is σ = 1427970790382. Its totient is φ = 1427970790380.

The previous prime is 1427970790369. The next prime is 1427970790387. The reversal of 1427970790381 is 1830970797241.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1347561114025 + 80409676356 = 1160845^2 + 283566^2 .

It is a cyclic number.

It is not a de Polignac number, because 1427970790381 - 2²⁷ = 1427836572653 is a prime.

It is a super-2 number, since 2×1427970790381² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1427970790387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 713985395190 + 713985395191.

It is an arithmetic number, because the mean of its divisors is an integer number (713985395191).

Almost surely, 2^{1427970790381} is an apocalyptic number.

It is an amenable number.

1427970790381 is a deficient number, since it is larger than the sum of its proper divisors (1).

1427970790381 is an equidigital number, since it uses as much as digits as its factorization.

1427970790381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5334336, while the sum is 58.

The spelling of 1427970790381 in words is "one trillion, four hundred twenty-seven billion, nine hundred seventy million, seven hundred ninety thousand, three hundred eighty-one".