1961677253 has 8 divisors (see below), whose sum is σ = 1997170560. Its totient is φ = 1926258880.

The previous prime is 1961677219. The next prime is 1961677259. The reversal of 1961677253 is 3527761691.

It is a happy number.

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 1961677253 - 2²² = 1957482949 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1961677198 and 1961677207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1961677259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35501 + ... + 71997.

It is an arithmetic number, because the mean of its divisors is an integer number (249646320).

Almost surely, 2^1961677253 is an apocalyptic number.

It is an amenable number.

1961677253 is a deficient number, since it is larger than the sum of its proper divisors (35493307).

1961677253 is an equidigital number, since it uses as much as digits as its factorization.

1961677253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37467.

The product of its digits is 476280, while the sum is 47.

The square root of 1961677253 is about 44290.8258333484. The cubic root of 1961677253 is about 1251.8218241155.

It can be divided in two parts, 19616 and 77253, that added together give a palindrome (96869).

The spelling of 1961677253 in words is "one billion, nine hundred sixty-one million, six hundred seventy-seven thousand, two hundred fifty-three".