1401303641 has 4 divisors (see below), whose sum is σ = 1421040384. Its totient is φ = 1381566900.

The previous prime is 1401303581. The next prime is 1401303653. The reversal of 1401303641 is 1463031041.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1401303641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1401303661) 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, 9868265 + ... + 9868406.

It is an arithmetic number, because the mean of its divisors is an integer number (355260096).

Almost surely, 2^1401303641 is an apocalyptic number.

It is an amenable number.

1401303641 is a deficient number, since it is larger than the sum of its proper divisors (19736743).

1401303641 is an equidigital number, since it uses as much as digits as its factorization.

1401303641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19736742.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 1401303641 is about 37433.9904498572. The cubic root of 1401303641 is about 1119.0360650197.

Adding to 1401303641 its reverse (1463031041), we get a palindrome (2864334682).

The spelling of 1401303641 in words is "one billion, four hundred one million, three hundred three thousand, six hundred forty-one".