1923163801 has 4 divisors (see below), whose sum is σ = 2071099492. Its totient is φ = 1775228112.

The previous prime is 1923163789. The next prime is 1923163859. The reversal of 1923163801 is 1083613291.

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

It can be written as a sum of positive squares in 2 ways, for example, as 853808400 + 1069355401 = 29220^2 + 32701^2 .

It is a cyclic number.

It is not a de Polignac number, because 1923163801 - 2⁹ = 1923163289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1923163861) 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, 73967826 + ... + 73967851.

It is an arithmetic number, because the mean of its divisors is an integer number (517774873).

Almost surely, 2^1923163801 is an apocalyptic number.

It is an amenable number.

1923163801 is a deficient number, since it is larger than the sum of its proper divisors (147935691).

1923163801 is a wasteful number, since it uses less digits than its factorization.

1923163801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147935690.

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 1923163801 is about 43853.8915148930. The cubic root of 1923163801 is about 1243.5753128363.

The spelling of 1923163801 in words is "one billion, nine hundred twenty-three million, one hundred sixty-three thousand, eight hundred one".