1427032381 has 2 divisors, whose sum is σ = 1427032382. Its totient is φ = 1427032380.

The previous prime is 1427032253. The next prime is 1427032427. The reversal of 1427032381 is 1832307241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 854626756 + 572405625 = 29234^2 + 23925^2 .

It is a cyclic number.

It is not a de Polignac number, because 1427032381 - 2⁷ = 1427032253 is a prime.

It is a super-2 number, since 2×1427032381² = 4072842832845058322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1427032681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 713516190 + 713516191.

It is an arithmetic number, because the mean of its divisors is an integer number (713516191).

Almost surely, 2^1427032381 is an apocalyptic number.

It is an amenable number.

1427032381 is a deficient number, since it is larger than the sum of its proper divisors (1).

1427032381 is an equidigital number, since it uses as much as digits as its factorization.

1427032381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 1427032381 is about 37776.0821287756. The cubic root of 1427032381 is about 1125.8432869996.

The spelling of 1427032381 in words is "one billion, four hundred twenty-seven million, thirty-two thousand, three hundred eighty-one".