9918162542 has 16 divisors (see below), whose sum is σ = 15821781840. Its totient is φ = 4646805888.

The previous prime is 9918162533. The next prime is 9918162563. The reversal of 9918162542 is 2452618199.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 634817 + ... + 650252.

It is an arithmetic number, because the mean of its divisors is an integer number (988861365).

Almost surely, 2^9918162542 is an apocalyptic number.

9918162542 is a deficient number, since it is larger than the sum of its proper divisors (5903619298).

9918162542 is a wasteful number, since it uses less digits than its factorization.

9918162542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1285315.

The product of its digits is 311040, while the sum is 47.

The square root of 9918162542 is about 99589.9720955880. The cubic root of 9918162542 is about 2148.5414691862.

The spelling of 9918162542 in words is "nine billion, nine hundred eighteen million, one hundred sixty-two thousand, five hundred forty-two".