1913406066 has 192 divisors, whose sum is σ = 5236358400. Its totient is φ = 496005120.

The previous prime is 1913406023. The next prime is 1913406067. The reversal of 1913406066 is 6606043191.

1913406066 is a `hidden beast` number, since 1 + 9 + 1 + 3 + 40 + 606 + 6 = 666.

It is a super-2 number, since 2×1913406066² = 7322245546811192712, 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 1913406066.

It is not an unprimeable number, because it can be changed into a prime (1913406067) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3194035 + ... + 3194633.

It is an arithmetic number, because the mean of its divisors is an integer number (27272700).

Almost surely, 2^1913406066 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1913406066, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2618179200).

1913406066 is an abundant number, since it is smaller than the sum of its proper divisors (3322952334).

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

1913406066 is a wasteful number, since it uses less digits than its factorization.

1913406066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 721 (or 718 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 1913406066 is about 43742.4972538149. The cubic root of 1913406066 is about 1241.4685311182.

The spelling of 1913406066 in words is "one billion, nine hundred thirteen million, four hundred six thousand, sixty-six".