1961044369 has 8 divisors (see below), whose sum is σ = 2010015392. Its totient is φ = 1912226400.

The previous prime is 1961044357. The next prime is 1961044433. The reversal of 1961044369 is 9634401691.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1961044369 - 2¹⁵ = 1961011601 is a prime.

It is a super-2 number, since 2×1961044369² = 7691390034373216322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is not an unprimeable number, because it can be changed into a prime (1961044769) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12099 + ... + 63784.

It is an arithmetic number, because the mean of its divisors is an integer number (251251924).

Almost surely, 2^1961044369 is an apocalyptic number.

It is an amenable number.

1961044369 is a deficient number, since it is larger than the sum of its proper divisors (48971023).

1961044369 is an equidigital number, since it uses as much as digits as its factorization.

1961044369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76527.

The product of its (nonzero) digits is 139968, while the sum is 43.

The square root of 1961044369 is about 44283.6806171303. The cubic root of 1961044369 is about 1251.6871870819.

The spelling of 1961044369 in words is "one billion, nine hundred sixty-one million, forty-four thousand, three hundred sixty-nine".