1961535 has 8 divisors (see below), whose sum is σ = 3138480. Its totient is φ = 1046144.

The previous prime is 1961527. The next prime is 1961537. The reversal of 1961535 is 5351691.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1961535 - 2³ = 1961527 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1961537) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65370 + ... + 65399.

It is an arithmetic number, because the mean of its divisors is an integer number (392310).

2^1961535 is an apocalyptic number.

1961535 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1961535 is a deficient number, since it is larger than the sum of its proper divisors (1176945).

1961535 is a wasteful number, since it uses less digits than its factorization.

1961535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130777.

The product of its digits is 4050, while the sum is 30.

The square root of 1961535 is about 1400.5481069924. The cubic root of 1961535 is about 125.1791564344.

The spelling of 1961535 in words is "one million, nine hundred sixty-one thousand, five hundred thirty-five".