1961269 has 4 divisors (see below), whose sum is σ = 1964844. Its totient is φ = 1957696.

The previous prime is 1961257. The next prime is 1961321. The reversal of 1961269 is 9621691.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9621691 = 2621 ⋅3671.

It can be written as a sum of positive squares in 2 ways, for example, as 1238769 + 722500 = 1113^2 + 850^2 .

It is a cyclic number.

It is not a de Polignac number, because 1961269 - 2¹⁵ = 1928501 is a prime.

It is a super-2 number, since 2×1961269² = 7693152180722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1961249) 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, 772 + ... + 2125.

It is an arithmetic number, because the mean of its divisors is an integer number (491211).

2^1961269 is an apocalyptic number.

It is an amenable number.

1961269 is a deficient number, since it is larger than the sum of its proper divisors (3575).

1961269 is an equidigital number, since it uses as much as digits as its factorization.

1961269 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3574.

The product of its digits is 5832, while the sum is 34.

The square root of 1961269 is about 1400.4531409512. The cubic root of 1961269 is about 125.1734977435.

The spelling of 1961269 in words is "one million, nine hundred sixty-one thousand, two hundred sixty-nine".