1401134663 has 4 divisors (see below), whose sum is σ = 1402915800. Its totient is φ = 1399353528.

The previous prime is 1401134653. The next prime is 1401134699. The reversal of 1401134663 is 3664311041.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1401134663 - 2¹⁰ = 1401133639 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 (1401134653) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 889388 + ... + 890961.

It is an arithmetic number, because the mean of its divisors is an integer number (350728950).

Almost surely, 2^1401134663 is an apocalyptic number.

1401134663 is a deficient number, since it is larger than the sum of its proper divisors (1781137).

1401134663 is an equidigital number, since it uses as much as digits as its factorization.

1401134663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1781136.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 1401134663 is about 37431.7333688944. The cubic root of 1401134663 is about 1118.9910830777.

The spelling of 1401134663 in words is "one billion, four hundred one million, one hundred thirty-four thousand, six hundred sixty-three".