1961735 has 4 divisors (see below), whose sum is σ = 2354088. Its totient is φ = 1569384.

The previous prime is 1961683. The next prime is 1961737. The reversal of 1961735 is 5371691.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5371691 = 13 ⋅413207.

It is a cyclic number.

It is not a de Polignac number, because 1961735 - 2⁶ = 1961671 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 (1961737) 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, 196169 + ... + 196178.

It is an arithmetic number, because the mean of its divisors is an integer number (588522).

2^1961735 is an apocalyptic number.

1961735 is a deficient number, since it is larger than the sum of its proper divisors (392353).

1961735 is an equidigital number, since it uses as much as digits as its factorization.

1961735 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 392352.

The product of its digits is 5670, while the sum is 32.

The square root of 1961735 is about 1400.6195057902. The cubic root of 1961735 is about 125.1834107523.

The spelling of 1961735 in words is "one million, nine hundred sixty-one thousand, seven hundred thirty-five".