1966937201 has 2 divisors, whose sum is σ = 1966937202. Its totient is φ = 1966937200.

The previous prime is 1966937183. The next prime is 1966937243. The reversal of 1966937201 is 1027396691.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1952314225 + 14622976 = 44185^2 + 3824^2 .

It is a cyclic number.

It is not a de Polignac number, because 1966937201 - 2¹⁰ = 1966936177 is a prime.

It is not a weakly prime, because it can be changed into another prime (1966937251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 983468600 + 983468601.

It is an arithmetic number, because the mean of its divisors is an integer number (983468601).

Almost surely, 2^1966937201 is an apocalyptic number.

It is an amenable number.

1966937201 is a deficient number, since it is larger than the sum of its proper divisors (1).

1966937201 is an equidigital number, since it uses as much as digits as its factorization.

1966937201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 122472, while the sum is 44.

The square root of 1966937201 is about 44350.1657381345. The cubic root of 1966937201 is about 1252.9396840666.

The spelling of 1966937201 in words is "one billion, nine hundred sixty-six million, nine hundred thirty-seven thousand, two hundred one".