1023945678 has 32 divisors (see below), whose sum is σ = 2600497920. Its totient is φ = 292555800.

The previous prime is 1023945667. The next prime is 1023945691. The reversal of 1023945678 is 8765493201.

1023945678 is digitally balanced in base 2 and base 10, because in such bases it contains all the possibile digits an equal number of times.

1023945678 is strictly pandigital in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1354048 + ... + 1354803.

It is an arithmetic number, because the mean of its divisors is an integer number (81265560).

It is a 2-persistent number, because it is pandigital, and so is 2⋅1023945678 = 2047891356, but 3⋅1023945678 = 3071837034 is not.

Almost surely, 2^1023945678 is an apocalyptic number.

1023945678 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1023945678 is an abundant number, since it is smaller than the sum of its proper divisors (1576552242).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1023945678 is a wasteful number, since it uses less digits than its factorization.

1023945678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2708869 (or 2708863 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The square root of 1023945678 is about 31999.1512074930. The cubic root of 1023945678 is about 1007.9190163113.

The spelling of 1023945678 in words is "one billion, twenty-three million, nine hundred forty-five thousand, six hundred seventy-eight".