1966402512 has 60 divisors (see below), whose sum is σ = 5826920580. Its totient is φ = 616909824.

The previous prime is 1966402499. The next prime is 1966402519. The reversal of 1966402512 is 2152046691.

1966402512 is a `hidden beast` number, since 1 + 9 + 6 + 640 + 2 + 5 + 1 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 855913536 + 1110488976 = 29256^2 + 33324^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1966402519) 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 11 ways as a sum of consecutive naturals, for example, 399187 + ... + 404082.

It is an arithmetic number, because the mean of its divisors is an integer number (97115343).

Almost surely, 2^1966402512 is an apocalyptic number.

1966402512 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1966402512 is an abundant number, since it is smaller than the sum of its proper divisors (3860518068).

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

1966402512 is a wasteful number, since it uses less digits than its factorization.

1966402512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 803300 (or 803291 counting only the distinct ones).

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

The square root of 1966402512 is about 44344.1372900635. The cubic root of 1966402512 is about 1252.8261414176.

The spelling of 1966402512 in words is "one billion, nine hundred sixty-six million, four hundred two thousand, five hundred twelve".