11193851601 has 9 divisors (see below), whose sum is σ = 16169355241. Its totient is φ = 7462356132.

The previous prime is 11193851593. The next prime is 11193851657. The reversal of 11193851601 is 10615839111.

The square root of 11193851601 is 105801.

It is a perfect power (a square), and thus also a powerful number.

11193851601 is a `hidden beast` number, since 1 + 1 + 19 + 38 + 5 + 1 + 601 = 666.

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 11193851601 - 2³ = 11193851593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11193851681) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 299770 + ... + 335036.

Almost surely, 2^11193851601 is an apocalyptic number.

11193851601 is the 105801-st square number.

11193851601 is the 52901-st centered octagonal number.

It is an amenable number.

11193851601 is a deficient number, since it is larger than the sum of its proper divisors (4975503640).

11193851601 is an frugal number, since it uses more digits than its factorization.

11193851601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70540 (or 35270 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 36.

Multiplying 11193851601 by its sum of digits (36), we get a square (402978657636 = 634806²).

The spelling of 11193851601 in words is "eleven billion, one hundred ninety-three million, eight hundred fifty-one thousand, six hundred one".