2043554923 has 4 divisors (see below), whose sum is σ = 2093397768. Its totient is φ = 1993712080.

The previous prime is 2043554911. The next prime is 2043554927. The reversal of 2043554923 is 3294553402.

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 2043554923 - 2¹³ = 2043546731 is a prime.

It is a super-2 number, since 2×2043554923² = 8352233446635071858, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2043554927) 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, 24921361 + ... + 24921442.

It is an arithmetic number, because the mean of its divisors is an integer number (523349442).

Almost surely, 2^2043554923 is an apocalyptic number.

2043554923 is a deficient number, since it is larger than the sum of its proper divisors (49842845).

2043554923 is an equidigital number, since it uses as much as digits as its factorization.

2043554923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49842844.

The product of its (nonzero) digits is 129600, while the sum is 37.

The square root of 2043554923 is about 45205.6956920254. The cubic root of 2043554923 is about 1269.0014104482.

The spelling of 2043554923 in words is "two billion, forty-three million, five hundred fifty-four thousand, nine hundred twenty-three".