1961173 has 2 divisors, whose sum is σ = 1961174. Its totient is φ = 1961172.

The previous prime is 1961147. The next prime is 1961213. The reversal of 1961173 is 3711691.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1542564 + 418609 = 1242^2 + 647^2 .

It is an emirp because it is prime and its reverse (3711691) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1961173 - 2¹³ = 1952981 is a prime.

It is equal to p₁₄₆₂₆₉ and since 1961173 and 146269 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1961873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 980586 + 980587.

It is an arithmetic number, because the mean of its divisors is an integer number (980587).

2^1961173 is an apocalyptic number.

It is an amenable number.

1961173 is a deficient number, since it is larger than the sum of its proper divisors (1).

1961173 is an equidigital number, since it uses as much as digits as its factorization.

1961173 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1134, while the sum is 28.

The square root of 1961173 is about 1400.4188659112. The cubic root of 1961173 is about 125.1714553836.

It can be divided in two parts, 196 and 1173, that added together give a square (1369 = 37²).

The spelling of 1961173 in words is "one million, nine hundred sixty-one thousand, one hundred seventy-three".