1619426427 has 8 divisors (see below), whose sum is σ = 2161982016. Its totient is φ = 1078244232.

The previous prime is 1619426423. The next prime is 1619426503. The reversal of 1619426427 is 7246249161.

1619426427 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1619426427 - 2² = 1619426423 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1619426423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 340593 + ... + 345314.

It is an arithmetic number, because the mean of its divisors is an integer number (270247752).

Almost surely, 2^1619426427 is an apocalyptic number.

1619426427 is a deficient number, since it is larger than the sum of its proper divisors (542555589).

1619426427 is an equidigital number, since it uses as much as digits as its factorization.

1619426427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 686697.

The product of its digits is 145152, while the sum is 42.

The square root of 1619426427 is about 40242.0976963180. The cubic root of 1619426427 is about 1174.3216672002.

The spelling of 1619426427 in words is "one billion, six hundred nineteen million, four hundred twenty-six thousand, four hundred twenty-seven".