1166626542 has 8 divisors (see below), whose sum is σ = 2333253096. Its totient is φ = 388875512.

The previous prime is 1166626541. The next prime is 1166626553. The reversal of 1166626542 is 2456266611.

It is a sphenic number, since it is the product of 3 distinct primes.

1166626542 is an admirable number.

It is a super-2 number, since 2×1166626542² = 2722034976997755528, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1166626542.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1166626541) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 97218873 + ... + 97218884.

It is an arithmetic number, because the mean of its divisors is an integer number (291656637).

Almost surely, 2^1166626542 is an apocalyptic number.

1166626542 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1166626542 is a wasteful number, since it uses less digits than its factorization.

1166626542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194437762.

The product of its digits is 103680, while the sum is 39.

The square root of 1166626542 is about 34155.9151831714. The cubic root of 1166626542 is about 1052.7145308128.

The spelling of 1166626542 in words is "one billion, one hundred sixty-six million, six hundred twenty-six thousand, five hundred forty-two".