1427921593 has 6 divisors (see below), whose sum is σ = 1661051706. Its totient is φ = 1223932752.

The previous prime is 1427921591. The next prime is 1427921609. The reversal of 1427921593 is 3951297241.

It can be written as a sum of positive squares in only one way, i.e., 1029639744 + 398281849 = 32088^2 + 19957^2 .

It is not a de Polignac number, because 1427921593 - 2¹ = 1427921591 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1427921591) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 14570580 + ... + 14570677.

It is an arithmetic number, because the mean of its divisors is an integer number (276841951).

Almost surely, 2^1427921593 is an apocalyptic number.

It is an amenable number.

1427921593 is a deficient number, since it is larger than the sum of its proper divisors (233130113).

1427921593 is an equidigital number, since it uses as much as digits as its factorization.

1427921593 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29141271 (or 29141264 counting only the distinct ones).

The product of its digits is 136080, while the sum is 43.

The square root of 1427921593 is about 37787.8498065185. The cubic root of 1427921593 is about 1126.0770834918.

The spelling of 1427921593 in words is "one billion, four hundred twenty-seven million, nine hundred twenty-one thousand, five hundred ninety-three".