1964149 has 4 divisors (see below), whose sum is σ = 2142720. Its totient is φ = 1785580.

The previous prime is 1964143. The next prime is 1964159. The reversal of 1964149 is 9414691.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1964149 - 2⁵ = 1964117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1964143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89269 + ... + 89290.

It is an arithmetic number, because the mean of its divisors is an integer number (535680).

2^1964149 is an apocalyptic number.

It is an amenable number.

1964149 is a deficient number, since it is larger than the sum of its proper divisors (178571).

1964149 is a wasteful number, since it uses less digits than its factorization.

1964149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178570.

The product of its digits is 7776, while the sum is 34.

The square root of 1964149 is about 1401.4810023686. The cubic root of 1964149 is about 125.2347375769.

The spelling of 1964149 in words is "one million, nine hundred sixty-four thousand, one hundred forty-nine".