1923523243 has 4 divisors (see below), whose sum is σ = 1925167048. Its totient is φ = 1921879440.

The previous prime is 1923523237. The next prime is 1923523291. The reversal of 1923523243 is 3423253291.

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 1923523243 - 2⁵ = 1923523211 is a prime.

It is a super-2 number, since 2×1923523243² = 7399883332722474098, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1923523199 and 1923523208.

It is not an unprimeable number, because it can be changed into a prime (1923523213) 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, 820146 + ... + 822487.

It is an arithmetic number, because the mean of its divisors is an integer number (481291762).

Almost surely, 2^1923523243 is an apocalyptic number.

1923523243 is a deficient number, since it is larger than the sum of its proper divisors (1643805).

1923523243 is a wasteful number, since it uses less digits than its factorization.

1923523243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1643804.

The product of its digits is 38880, while the sum is 34.

The square root of 1923523243 is about 43857.9895002040. The cubic root of 1923523243 is about 1243.6527833309.

The spelling of 1923523243 in words is "one billion, nine hundred twenty-three million, five hundred twenty-three thousand, two hundred forty-three".