1945413 has 6 divisors (see below), whose sum is σ = 2810054. Its totient is φ = 1296936.

The previous prime is 1945403. The next prime is 1945439. The reversal of 1945413 is 3145491.

It can be written as a sum of positive squares in only one way, i.e., 1896129 + 49284 = 1377^2 + 222^2 .

It is not a de Polignac number, because 1945413 - 2⁵ = 1945381 is a prime.

It is a Duffinian number.

1945413 is a lucky number.

It is a plaindrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1945403) 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 5 ways as a sum of consecutive naturals, for example, 108070 + ... + 108087.

2^1945413 is an apocalyptic number.

It is an amenable number.

1945413 is a deficient number, since it is larger than the sum of its proper divisors (864641).

1945413 is a wasteful number, since it uses less digits than its factorization.

1945413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216163 (or 216160 counting only the distinct ones).

The product of its digits is 2160, while the sum is 27.

The square root of 1945413 is about 1394.7806279125. The cubic root of 1945413 is about 124.8352603154.

The spelling of 1945413 in words is "one million, nine hundred forty-five thousand, four hundred thirteen".