1166455420 has 48 divisors (see below), whose sum is σ = 2681265888. Its totient is φ = 423624960.

The previous prime is 1166455399. The next prime is 1166455427. The reversal of 1166455420 is 245546611.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1166455427) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20914 + ... + 52633.

It is an arithmetic number, because the mean of its divisors is an integer number (55859706).

Almost surely, 2^1166455420 is an apocalyptic number.

1166455420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1166455420 is an abundant number, since it is smaller than the sum of its proper divisors (1514810468).

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

1166455420 is a wasteful number, since it uses less digits than its factorization.

1166455420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73630 (or 73628 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 34.

The square root of 1166455420 is about 34153.4100786437. The cubic root of 1166455420 is about 1052.6630572069.

The spelling of 1166455420 in words is "one billion, one hundred sixty-six million, four hundred fifty-five thousand, four hundred twenty".