1406189863 has 8 divisors (see below), whose sum is σ = 1521032688. Its totient is φ = 1292300544.

The previous prime is 1406189849. The next prime is 1406189879. The reversal of 1406189863 is 3689816041.

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

It is a cyclic number.

It is not a de Polignac number, because 1406189863 - 2¹³ = 1406181671 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1406186863) 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, 235306 + ... + 241207.

It is an arithmetic number, because the mean of its divisors is an integer number (190129086).

Almost surely, 2^1406189863 is an apocalyptic number.

1406189863 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1406189863 is a deficient number, since it is larger than the sum of its proper divisors (114842825).

1406189863 is a wasteful number, since it uses less digits than its factorization.

1406189863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 476753.

The product of its (nonzero) digits is 248832, while the sum is 46.

The square root of 1406189863 is about 37499.1981647608. The cubic root of 1406189863 is about 1120.3352161457.

The spelling of 1406189863 in words is "one billion, four hundred six million, one hundred eighty-nine thousand, eight hundred sixty-three".