1961536 has 14 divisors (see below), whose sum is σ = 3892550. Its totient is φ = 980736.

The previous prime is 1961527. The next prime is 1961537. The reversal of 1961536 is 6351691.

It can be written as a sum of positive squares in only one way, i.e., 1115136 + 846400 = 1056^2 + 920^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1961498 and 1961507.

It is not an unprimeable number, because it can be changed into a prime (1961537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15261 + ... + 15388.

2^1961536 is an apocalyptic number.

1961536 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1961536 is a deficient number, since it is larger than the sum of its proper divisors (1931014).

1961536 is an equidigital number, since it uses as much as digits as its factorization.

1961536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30661 (or 30651 counting only the distinct ones).

The product of its digits is 4860, while the sum is 31.

The square root of 1961536 is about 1400.5484639954. The cubic root of 1961536 is about 125.1791777067.

The spelling of 1961536 in words is "one million, nine hundred sixty-one thousand, five hundred thirty-six".