961967155 has 4 divisors (see below), whose sum is σ = 1154360592. Its totient is φ = 769573720.

The previous prime is 961967141. The next prime is 961967159. The reversal of 961967155 is 551769169.

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

It is not a de Polignac number, because 961967155 - 2²³ = 953578547 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 961967099 and 961967108.

It is not an unprimeable number, because it can be changed into a prime (961967159) 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, 96196711 + ... + 96196720.

It is an arithmetic number, because the mean of its divisors is an integer number (288590148).

Almost surely, 2^961967155 is an apocalyptic number.

961967155 is a deficient number, since it is larger than the sum of its proper divisors (192393437).

961967155 is a wasteful number, since it uses less digits than its factorization.

961967155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192393436.

The product of its digits is 510300, while the sum is 49.

The square root of 961967155 is about 31015.5953513712. The cubic root of 961967155 is about 987.1581785469.

The spelling of 961967155 in words is "nine hundred sixty-one million, nine hundred sixty-seven thousand, one hundred fifty-five".