1018078542 has 48 divisors (see below), whose sum is σ = 2391331488. Its totient is φ = 311169600.

The previous prime is 1018078519. The next prime is 1018078543. The reversal of 1018078542 is 2458708101.

1018078542 is a `hidden beast` number, since 101 + 8 + 0 + 7 + 8 + 542 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 1018078497 and 1018078506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1018078543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20928 + ... + 49740.

It is an arithmetic number, because the mean of its divisors is an integer number (49819406).

Almost surely, 2^1018078542 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1018078542, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1195665744).

1018078542 is an abundant number, since it is smaller than the sum of its proper divisors (1373252946).

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

1018078542 is a wasteful number, since it uses less digits than its factorization.

1018078542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28985 (or 28982 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 36.

The square root of 1018078542 is about 31907.3430733429. The cubic root of 1018078542 is about 1005.9902262079.

The spelling of 1018078542 in words is "one billion, eighteen million, seventy-eight thousand, five hundred forty-two".