1400312641 has 12 divisors (see below), whose sum is σ = 1754238612. Its totient is φ = 1107939168.

The previous prime is 1400312621. The next prime is 1400312651. The reversal of 1400312641 is 1462130041.

It can be written as a sum of positive squares in 2 ways, for example, as 462422016 + 937890625 = 21504^2 + 30625^2 .

It is not a de Polignac number, because 1400312641 - 2⁷ = 1400312513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1400312621) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1098510 + ... + 1099783.

It is an arithmetic number, because the mean of its divisors is an integer number (146186551).

Almost surely, 2^1400312641 is an apocalyptic number.

It is an amenable number.

1400312641 is a deficient number, since it is larger than the sum of its proper divisors (353925971).

1400312641 is a wasteful number, since it uses less digits than its factorization.

1400312641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2198320 (or 2198313 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 1400312641 is about 37420.7514756184. The cubic root of 1400312641 is about 1118.7722092238.

Adding to 1400312641 its reverse (1462130041), we get a palindrome (2862442682).

The spelling of 1400312641 in words is "one billion, four hundred million, three hundred twelve thousand, six hundred forty-one".