1166722854 has 64 divisors (see below), whose sum is σ = 2685312000. Its totient is φ = 334225440.

The previous prime is 1166722849. The next prime is 1166722859. The reversal of 1166722854 is 4582276611.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1166722849) and next prime (1166722859).

It is a super-2 number, since 2×1166722854² = 2722484436091810632, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1166722859) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 926077 + ... + 927335.

It is an arithmetic number, because the mean of its divisors is an integer number (41958000).

Almost surely, 2^1166722854 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1166722854, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1342656000).

1166722854 is an abundant number, since it is smaller than the sum of its proper divisors (1518589146).

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

1166722854 is a wasteful number, since it uses less digits than its factorization.

1166722854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2033.

The product of its digits is 161280, while the sum is 42.

The square root of 1166722854 is about 34157.3250416364. The cubic root of 1166722854 is about 1052.7434993096.

The spelling of 1166722854 in words is "one billion, one hundred sixty-six million, seven hundred twenty-two thousand, eight hundred fifty-four".