1167266478 has 64 divisors (see below), whose sum is σ = 2831708160. Its totient is φ = 313139712.

The previous prime is 1167266473. The next prime is 1167266543. The reversal of 1167266478 is 8746627611.

It is a super-2 number, since 2×1167266478² = 2725022061325048968, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1167266473) 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, 340300 + ... + 343712.

It is an arithmetic number, because the mean of its divisors is an integer number (44245440).

Almost surely, 2^1167266478 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1167266478, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1415854080).

1167266478 is an abundant number, since it is smaller than the sum of its proper divisors (1664441682).

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

1167266478 is a wasteful number, since it uses less digits than its factorization.

1167266478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3921.

The product of its digits is 677376, while the sum is 48.

The square root of 1167266478 is about 34165.2817638023. The cubic root of 1167266478 is about 1052.9069793705.

The spelling of 1167266478 in words is "one billion, one hundred sixty-seven million, two hundred sixty-six thousand, four hundred seventy-eight".