1023854890 has 16 divisors (see below), whose sum is σ = 1923067008. Its totient is φ = 391735696.

The previous prime is 1023854837. The next prime is 1023854893. The reversal of 1023854890 is 984583201.

It is not an unprimeable number, because it can be changed into a prime (1023854893) 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, 2225542 + ... + 2226001.

It is an arithmetic number, because the mean of its divisors is an integer number (120191688).

Almost surely, 2^1023854890 is an apocalyptic number.

1023854890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1023854890 is a deficient number, since it is larger than the sum of its proper divisors (899212118).

1023854890 is a wasteful number, since it uses less digits than its factorization.

1023854890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4451573.

The product of its (nonzero) digits is 69120, while the sum is 40.

The square root of 1023854890 is about 31997.7325759186. The cubic root of 1023854890 is about 1007.8892264314.

The spelling of 1023854890 in words is "one billion, twenty-three million, eight hundred fifty-four thousand, eight hundred ninety".