1603116381 has 8 divisors (see below), whose sum is σ = 2159524864. Its totient is φ = 1057726080.

The previous prime is 1603116349. The next prime is 1603116397. The reversal of 1603116381 is 1836113061.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1603116381 - 2⁵ = 1603116349 is a prime.

It is a super-2 number, since 2×1603116381² = 5139964262061074322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1603116331) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2754205 + ... + 2754786.

It is an arithmetic number, because the mean of its divisors is an integer number (269940608).

Almost surely, 2^1603116381 is an apocalyptic number.

It is an amenable number.

1603116381 is a deficient number, since it is larger than the sum of its proper divisors (556408483).

1603116381 is an equidigital number, since it uses as much as digits as its factorization.

1603116381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5509091.

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 1603116381 is about 40038.9358125313. The cubic root of 1603116381 is about 1170.3659655816.

The spelling of 1603116381 in words is "one billion, six hundred three million, one hundred sixteen thousand, three hundred eighty-one".