1117601381 has 4 divisors (see below), whose sum is σ = 1203570732. Its totient is φ = 1031632032.

The previous prime is 1117601351. The next prime is 1117601383. The reversal of 1117601381 is 1831067111.

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

It can be written as a sum of positive squares in 2 ways, for example, as 169885156 + 947716225 = 13034^2 + 30785^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1117601381 is a prime.

It is a super-2 number, since 2×1117601381² = 2498065693626214322, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1117601383) 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, 42984656 + ... + 42984681.

It is an arithmetic number, because the mean of its divisors is an integer number (300892683).

Almost surely, 2^1117601381 is an apocalyptic number.

It is an amenable number.

1117601381 is a deficient number, since it is larger than the sum of its proper divisors (85969351).

1117601381 is an equidigital number, since it uses as much as digits as its factorization.

1117601381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85969350.

The product of its (nonzero) digits is 1008, while the sum is 29.

The square root of 1117601381 is about 33430.5456282125. The cubic root of 1117601381 is about 1037.7569324666.

Adding to 1117601381 its reverse (1831067111), we get a palindrome (2948668492).

The spelling of 1117601381 in words is "one billion, one hundred seventeen million, six hundred one thousand, three hundred eighty-one".