1966694053 has 8 divisors (see below), whose sum is σ = 2023557536. Its totient is φ = 1910336400.

The previous prime is 1966693987. The next prime is 1966694057. The reversal of 1966694053 is 3504966691.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1966694053 - 2²⁹ = 1429823141 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1966693988 and 1966694006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1966694057) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 118563 + ... + 134128.

It is an arithmetic number, because the mean of its divisors is an integer number (252944692).

Almost surely, 2^1966694053 is an apocalyptic number.

It is an amenable number.

1966694053 is a deficient number, since it is larger than the sum of its proper divisors (56863483).

1966694053 is a wasteful number, since it uses less digits than its factorization.

1966694053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252915.

The product of its (nonzero) digits is 1049760, while the sum is 49.

The square root of 1966694053 is about 44347.4244235220. The cubic root of 1966694053 is about 1252.8880534854. Note that the first 3 decimals are identical.

The spelling of 1966694053 in words is "one billion, nine hundred sixty-six million, six hundred ninety-four thousand, fifty-three".