1953360891 has 12 divisors (see below), whose sum is σ = 2822590680. Its totient is φ = 1301747040.

The previous prime is 1953360889. The next prime is 1953360919. The reversal of 1953360891 is 1980633591.

1953360891 is a `hidden beast` number, since 1 + 9 + 5 + 33 + 608 + 9 + 1 = 666.

It is not a de Polignac number, because 1953360891 - 2¹ = 1953360889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1953360191) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15205 + ... + 64326.

It is an arithmetic number, because the mean of its divisors is an integer number (235215890).

Almost surely, 2^1953360891 is an apocalyptic number.

1953360891 is a deficient number, since it is larger than the sum of its proper divisors (869229789).

1953360891 is a wasteful number, since it uses less digits than its factorization.

1953360891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82266 (or 82263 counting only the distinct ones).

The product of its (nonzero) digits is 174960, while the sum is 45.

The square root of 1953360891 is about 44196.8425455937. The cubic root of 1953360891 is about 1250.0503213875.

The spelling of 1953360891 in words is "one billion, nine hundred fifty-three million, three hundred sixty thousand, eight hundred ninety-one".