1961135 has 16 divisors (see below), whose sum is σ = 2594592. Its totient is φ = 1411200.

The previous prime is 1961131. The next prime is 1961147. The reversal of 1961135 is 5311691.

1961135 = 288² + 289² + ... + 309².

It is not a de Polignac number, because 1961135 - 2² = 1961131 is a prime.

It is a zygodrome in base 6.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1961131) 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, 9857 + ... + 10053.

It is an arithmetic number, because the mean of its divisors is an integer number (162162).

2^1961135 is an apocalyptic number.

1961135 is a deficient number, since it is larger than the sum of its proper divisors (633457).

1961135 is a wasteful number, since it uses less digits than its factorization.

1961135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 394.

The product of its digits is 810, while the sum is 26.

The square root of 1961135 is about 1400.4052984761. The cubic root of 1961135 is about 125.1706469310.

It can be divided in two parts, 196 and 1135, that added together give a palindrome (1331).

The spelling of 1961135 in words is "one million, nine hundred sixty-one thousand, one hundred thirty-five".