961967143 has 4 divisors (see below), whose sum is σ = 975516048. Its totient is φ = 948418240.

The previous prime is 961967141. The next prime is 961967159. The reversal of 961967143 is 341769169.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 961967143 - 2¹ = 961967141 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 961967093 and 961967102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (961967141) 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, 6774346 + ... + 6774487.

It is an arithmetic number, because the mean of its divisors is an integer number (243879012).

Almost surely, 2^961967143 is an apocalyptic number.

961967143 is a deficient number, since it is larger than the sum of its proper divisors (13548905).

961967143 is a wasteful number, since it uses less digits than its factorization.

961967143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13548904.

The product of its digits is 244944, while the sum is 46.

The square root of 961967143 is about 31015.5951579202. The cubic root of 961967143 is about 987.1581744421.

The spelling of 961967143 in words is "nine hundred sixty-one million, nine hundred sixty-seven thousand, one hundred forty-three".