1961258 has 16 divisors (see below), whose sum is σ = 3191496. Its totient is φ = 898560.

The previous prime is 1961257. The next prime is 1961321. The reversal of 1961258 is 8521691.

It can be written as a sum of positive squares in 4 ways, for example, as 935089 + 1026169 = 967^2 + 1013^2 .

It is not an unprimeable number, because it can be changed into a prime (1961251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6110 + ... + 6422.

2^1961258 is an apocalyptic number.

1961258 is a deficient number, since it is larger than the sum of its proper divisors (1230238).

1961258 is a wasteful number, since it uses less digits than its factorization.

1961258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 569.

The product of its digits is 4320, while the sum is 32.

The square root of 1961258 is about 1400.4492136454. The cubic root of 1961258 is about 125.1732637265.

The spelling of 1961258 in words is "one million, nine hundred sixty-one thousand, two hundred fifty-eight".