1965642 has 32 divisors (see below), whose sum is σ = 4758912. Its totient is φ = 528384.

The previous prime is 1965641. The next prime is 1965643. The reversal of 1965642 is 2465691.

It is an interprime number because it is at equal distance from previous prime (1965641) and next prime (1965643).

It is not an unprimeable number, because it can be changed into a prime (1965641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 663 + ... + 2090.

It is an arithmetic number, because the mean of its divisors is an integer number (148716).

2^1965642 is an apocalyptic number.

1965642 is an abundant number, since it is smaller than the sum of its proper divisors (2793270).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1965642 is a wasteful number, since it uses less digits than its factorization.

1965642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2782.

The product of its digits is 12960, while the sum is 33.

The square root of 1965642 is about 1402.0135520030. The cubic root of 1965642 is about 125.2664609184.

The spelling of 1965642 in words is "one million, nine hundred sixty-five thousand, six hundred forty-two".