1020123018 has 32 divisors (see below), whose sum is σ = 2276953920. Its totient is φ = 338538960.

The previous prime is 1020123017. The next prime is 1020123019. The reversal of 1020123018 is 8103210201.

It is an interprime number because it is at equal distance from previous prime (1020123017) and next prime (1020123019).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1020123017) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29353 + ... + 53868.

It is an arithmetic number, because the mean of its divisors is an integer number (71154810).

Almost surely, 2^1020123018 is an apocalyptic number.

1020123018 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1020123018 is an abundant number, since it is smaller than the sum of its proper divisors (1256830902).

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

1020123018 is a wasteful number, since it uses less digits than its factorization.

1020123018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83459 (or 83453 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

The square root of 1020123018 is about 31939.3647087728. The cubic root of 1020123018 is about 1006.6631761400.

Adding to 1020123018 its reverse (8103210201), we get a palindrome (9123333219).

The spelling of 1020123018 in words is "one billion, twenty million, one hundred twenty-three thousand, eighteen".