1961816 has 16 divisors (see below), whose sum is σ = 3696840. Its totient is φ = 976000.

The previous prime is 1961797. The next prime is 1961819. The reversal of 1961816 is 6181691.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1961819) 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, 1520 + ... + 2496.

2^1961816 is an apocalyptic number.

It is an amenable number.

1961816 is a deficient number, since it is larger than the sum of its proper divisors (1735024).

1961816 is a wasteful number, since it uses less digits than its factorization.

1961816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1234 (or 1230 counting only the distinct ones).

The product of its digits is 2592, while the sum is 32.

The square root of 1961816 is about 1400.6484212678. The cubic root of 1961816 is about 125.1851336688.

The spelling of 1961816 in words is "one million, nine hundred sixty-one thousand, eight hundred sixteen".