1016400063 has 16 divisors (see below), whose sum is σ = 1639906560. Its totient is φ = 546635136.

The previous prime is 1016400059. The next prime is 1016400103. The reversal of 1016400063 is 3600046101.

It is not a de Polignac number, because 1016400063 - 2² = 1016400059 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1016400013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1423173 + ... + 1423886.

It is an arithmetic number, because the mean of its divisors is an integer number (102494160).

Almost surely, 2^1016400063 is an apocalyptic number.

1016400063 is a deficient number, since it is larger than the sum of its proper divisors (623506497).

1016400063 is a wasteful number, since it uses less digits than its factorization.

1016400063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2847086.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 1016400063 is about 31881.0298296652. The cubic root of 1016400063 is about 1005.4370723346.

Adding to 1016400063 its reverse (3600046101), we get a palindrome (4616446164).

The spelling of 1016400063 in words is "one billion, sixteen million, four hundred thousand, sixty-three".