1966100454 has 12 divisors (see below), whose sum is σ = 4259884356. Its totient is φ = 655366812.

The previous prime is 1966100453. The next prime is 1966100489. The reversal of 1966100454 is 4540016691.

1966100454 is a `hidden beast` number, since 196 + 6 + 10 + 0 + 454 = 666.

It is a super-2 number, since 2×1966100454² = 7731101990438012232, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1966100453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 54613884 + ... + 54613919.

It is an arithmetic number, because the mean of its divisors is an integer number (354990363).

Almost surely, 2^1966100454 is an apocalyptic number.

1966100454 is an abundant number, since it is smaller than the sum of its proper divisors (2293783902).

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

1966100454 is a wasteful number, since it uses less digits than its factorization.

1966100454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109227811 (or 109227808 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 1966100454 is about 44340.7313200854. The cubic root of 1966100454 is about 1252.7619894896.

The spelling of 1966100454 in words is "one billion, nine hundred sixty-six million, one hundred thousand, four hundred fifty-four".