1427391063 has 96 divisors (see below), whose sum is σ = 2600632320. Its totient is φ = 736464960.

The previous prime is 1427391061. The next prime is 1427391101. The reversal of 1427391063 is 3601937241.

It is not a de Polignac number, because 1427391063 - 2¹ = 1427391061 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1427391061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1931148 + ... + 1931886.

It is an arithmetic number, because the mean of its divisors is an integer number (27089920).

Almost surely, 2^1427391063 is an apocalyptic number.

1427391063 is a deficient number, since it is larger than the sum of its proper divisors (1173241257).

1427391063 is a wasteful number, since it uses less digits than its factorization.

1427391063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 849 (or 846 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The square root of 1427391063 is about 37780.8293053501. The cubic root of 1427391063 is about 1125.9376053203.

The spelling of 1427391063 in words is "one billion, four hundred twenty-seven million, three hundred ninety-one thousand, sixty-three".