1063378399 has 16 divisors (see below), whose sum is σ = 1114251264. Its totient is φ = 1013652000.

The previous prime is 1063378369. The next prime is 1063378411. The reversal of 1063378399 is 9938733601.

It is a cyclic number.

It is not a de Polignac number, because 1063378399 - 2⁵ = 1063378367 is a prime.

It is a super-2 number, since 2×1063378399² = 2261547238919606402, 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 (1063378369) 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, 697452 + ... + 698974.

It is an arithmetic number, because the mean of its divisors is an integer number (69640704).

Almost surely, 2^1063378399 is an apocalyptic number.

1063378399 is a deficient number, since it is larger than the sum of its proper divisors (50872865).

1063378399 is a wasteful number, since it uses less digits than its factorization.

1063378399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1878.

The product of its (nonzero) digits is 734832, while the sum is 49.

The square root of 1063378399 is about 32609.4832679084. The cubic root of 1063378399 is about 1020.6948997291.

The spelling of 1063378399 in words is "one billion, sixty-three million, three hundred seventy-eight thousand, three hundred ninety-nine".