1893428663 has 8 divisors (see below), whose sum is σ = 2164972032. Its totient is φ = 1622148696.

The previous prime is 1893428627. The next prime is 1893428689. The reversal of 1893428663 is 3668243981.

It is a happy number.

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

It is not a de Polignac number, because 1893428663 - 2²² = 1889234359 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1893448663) 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, 50195 + ... + 79412.

It is an arithmetic number, because the mean of its divisors is an integer number (270621504).

Almost surely, 2^1893428663 is an apocalyptic number.

1893428663 is a deficient number, since it is larger than the sum of its proper divisors (271543369).

1893428663 is a wasteful number, since it uses less digits than its factorization.

1893428663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131701.

The product of its digits is 1492992, while the sum is 50.

The square root of 1893428663 is about 43513.5457415274. The cubic root of 1893428663 is about 1237.1327837137.

The spelling of 1893428663 in words is "one billion, eight hundred ninety-three million, four hundred twenty-eight thousand, six hundred sixty-three".