1427955623 has 4 divisors (see below), whose sum is σ = 1429770840. Its totient is φ = 1426140408.

The previous prime is 1427955619. The next prime is 1427955637. The reversal of 1427955623 is 3265597241.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1427955623 - 2² = 1427955619 is a prime.

It is a super-2 number, since 2×1427955623² = 4078114522514636258, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1427955643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 906428 + ... + 908001.

It is an arithmetic number, because the mean of its divisors is an integer number (357442710).

Almost surely, 2^1427955623 is an apocalyptic number.

1427955623 is a deficient number, since it is larger than the sum of its proper divisors (1815217).

1427955623 is an equidigital number, since it uses as much as digits as its factorization.

1427955623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1815216.

The product of its digits is 453600, while the sum is 44.

The square root of 1427955623 is about 37788.3000808451. The cubic root of 1427955623 is about 1126.0860289174.

The spelling of 1427955623 in words is "one billion, four hundred twenty-seven million, nine hundred fifty-five thousand, six hundred twenty-three".