1961595 has 12 divisors (see below), whose sum is σ = 3400176. Its totient is φ = 1046160.

The previous prime is 1961593. The next prime is 1961623. The reversal of 1961595 is 5951691.

1961595 is a `hidden beast` number, since 1 + 9 + 61 + 595 = 666.

It is not a de Polignac number, because 1961595 - 2¹ = 1961593 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1961593) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21751 + ... + 21840.

It is an arithmetic number, because the mean of its divisors is an integer number (283348).

2^1961595 is an apocalyptic number.

1961595 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1961595 is a deficient number, since it is larger than the sum of its proper divisors (1438581).

1961595 is a wasteful number, since it uses less digits than its factorization.

1961595 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43602 (or 43599 counting only the distinct ones).

The product of its digits is 12150, while the sum is 36.

The square root of 1961595 is about 1400.5695270139. The cubic root of 1961595 is about 125.1804327602.

It can be divided in two parts, 1961 and 595, that added together give a triangular number (2556 = T₇₁).

The spelling of 1961595 in words is "one million, nine hundred sixty-one thousand, five hundred ninety-five".