961053381 has 6 divisors (see below), whose sum is σ = 1388188230. Its totient is φ = 640702248.

The previous prime is 961053377. The next prime is 961053389. The reversal of 961053381 is 183350169.

It is a happy number.

961053381 is a `hidden beast` number, since 9 + 610 + 5 + 3 + 38 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 959450625 + 1602756 = 30975^2 + 1266^2 .

It is not a de Polignac number, because 961053381 - 2² = 961053377 is a prime.

It is a super-2 number, since 2×961053381² = 1847247202263062322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (961053389) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 53391846 + ... + 53391863.

It is an arithmetic number, because the mean of its divisors is an integer number (231364705).

Almost surely, 2^961053381 is an apocalyptic number.

It is an amenable number.

961053381 is a deficient number, since it is larger than the sum of its proper divisors (427134849).

961053381 is a wasteful number, since it uses less digits than its factorization.

961053381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106783715 (or 106783712 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The square root of 961053381 is about 31000.8609719150. The cubic root of 961053381 is about 986.8455118618.

The spelling of 961053381 in words is "nine hundred sixty-one million, fifty-three thousand, three hundred eighty-one".