1063916381 has 32 divisors (see below), whose sum is σ = 1249948800. Its totient is φ = 895380480.

The previous prime is 1063916377. The next prime is 1063916401. The reversal of 1063916381 is 1836193601.

It is a cyclic number.

It is not a de Polignac number, because 1063916381 - 2² = 1063916377 is a prime.

It is a super-2 number, since 2×1063916381² = 2263836131520274322, 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 (1063916341) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2089955 + ... + 2090463.

It is an arithmetic number, because the mean of its divisors is an integer number (39060900).

Almost surely, 2^1063916381 is an apocalyptic number.

1063916381 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1063916381 is a deficient number, since it is larger than the sum of its proper divisors (186032419).

1063916381 is a wasteful number, since it uses less digits than its factorization.

1063916381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 749.

The product of its (nonzero) digits is 23328, while the sum is 38.

The square root of 1063916381 is about 32617.7310829555. The cubic root of 1063916381 is about 1020.8669999296.

The spelling of 1063916381 in words is "one billion, sixty-three million, nine hundred sixteen thousand, three hundred eighty-one".