1401345634 has 12 divisors (see below), whose sum is σ = 2276150706. Its totient is φ = 646774752.

The previous prime is 1401345611. The next prime is 1401345637. The reversal of 1401345634 is 4365431041.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 533748609 + 867597025 = 23103^2 + 29455^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1401345596 and 1401345605.

It is not an unprimeable number, because it can be changed into a prime (1401345637) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2072659 + ... + 2073334.

Almost surely, 2^1401345634 is an apocalyptic number.

1401345634 is a deficient number, since it is larger than the sum of its proper divisors (874805072).

1401345634 is a wasteful number, since it uses less digits than its factorization.

1401345634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4146021 (or 4146008 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 1401345634 is about 37434.5513396381. The cubic root of 1401345634 is about 1119.0472429950.

Adding to 1401345634 its reverse (4365431041), we get a palindrome (5766776675).

The spelling of 1401345634 in words is "one billion, four hundred one million, three hundred forty-five thousand, six hundred thirty-four".