1961883 has 48 divisors (see below), whose sum is σ = 3744000. Its totient is φ = 959040.

The previous prime is 1961873. The next prime is 1961887. The reversal of 1961883 is 3881691.

It is not a de Polignac number, because 1961883 - 2⁶ = 1961819 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is an Ulam number.

Its product of digits (10368) is a multiple of the sum of its prime factors (192).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1961887) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 13093 + ... + 13241.

It is an arithmetic number, because the mean of its divisors is an integer number (78000).

2^1961883 is an apocalyptic number.

1961883 is a deficient number, since it is larger than the sum of its proper divisors (1782117).

1961883 is a wasteful number, since it uses less digits than its factorization.

1961883 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192 (or 189 counting only the distinct ones).

The product of its digits is 10368, while the sum is 36.

The square root of 1961883 is about 1400.6723385575. The cubic root of 1961883 is about 125.1865587614.

It can be divided in two parts, 19618 and 83, that added together give a triangular number (19701 = T₁₉₈).

The spelling of 1961883 in words is "one million, nine hundred sixty-one thousand, eight hundred eighty-three".