1427723673 has 4 divisors (see below), whose sum is σ = 1903631568. Its totient is φ = 951815780.

The previous prime is 1427723651. The next prime is 1427723681. The reversal of 1427723673 is 3763277241.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1427723673 - 2¹⁰ = 1427722649 is a prime.

It is a super-2 number, since 2×1427723673² = 4076789772889221858, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1427723603) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 237953943 + ... + 237953948.

It is an arithmetic number, because the mean of its divisors is an integer number (475907892).

Almost surely, 2^1427723673 is an apocalyptic number.

It is an amenable number.

1427723673 is a deficient number, since it is larger than the sum of its proper divisors (475907895).

1427723673 is an equidigital number, since it uses as much as digits as its factorization.

1427723673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 475907894.

The product of its digits is 296352, while the sum is 42.

The square root of 1427723673 is about 37785.2308845665. The cubic root of 1427723673 is about 1126.0250536802.

It can be divided in two parts, 14277 and 23673, that added together give a triangular number (37950 = T₂₇₅).

The spelling of 1427723673 in words is "one billion, four hundred twenty-seven million, seven hundred twenty-three thousand, six hundred seventy-three".