1946338957 has 4 divisors (see below), whose sum is σ = 1949284156. Its totient is φ = 1943393760.

The previous prime is 1946338951. The next prime is 1946338969. The reversal of 1946338957 is 7598336491.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7598336491 = 5689 ⋅1335619.

It can be written as a sum of positive squares in 2 ways, for example, as 1667415556 + 278923401 = 40834^2 + 16701^2 .

It is a cyclic number.

It is not a de Polignac number, because 1946338957 - 2⁷ = 1946338829 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1946338898 and 1946338907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1946338951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1471608 + ... + 1472929.

It is an arithmetic number, because the mean of its divisors is an integer number (487321039).

Almost surely, 2^1946338957 is an apocalyptic number.

It is an amenable number.

1946338957 is a deficient number, since it is larger than the sum of its proper divisors (2945199).

1946338957 is an equidigital number, since it uses as much as digits as its factorization.

1946338957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2945198.

The product of its digits is 4898880, while the sum is 55.

The square root of 1946338957 is about 44117.3317076180. The cubic root of 1946338957 is about 1248.5506309397.

The spelling of 1946338957 in words is "one billion, nine hundred forty-six million, three hundred thirty-eight thousand, nine hundred fifty-seven".