1401631453 has 16 divisors (see below), whose sum is σ = 1522556784. Its totient is φ = 1285079040.

The previous prime is 1401631423. The next prime is 1401631507. The reversal of 1401631453 is 3541361041.

It can be written as a sum of positive squares in 8 ways, for example, as 91336249 + 1310295204 = 9557^2 + 36198^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1401631453 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 (1401631423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 693901 + ... + 695917.

It is an arithmetic number, because the mean of its divisors is an integer number (95159799).

Almost surely, 2^1401631453 is an apocalyptic number.

It is an amenable number.

1401631453 is a deficient number, since it is larger than the sum of its proper divisors (120925331).

1401631453 is a wasteful number, since it uses less digits than its factorization.

1401631453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3072.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 1401631453 is about 37438.3687278172. The cubic root of 1401631453 is about 1119.1233182599.

Adding to 1401631453 its reverse (3541361041), we get a palindrome (4942992494).

The spelling of 1401631453 in words is "one billion, four hundred one million, six hundred thirty-one thousand, four hundred fifty-three".