1401144673 has 2 divisors, whose sum is σ = 1401144674. Its totient is φ = 1401144672.

The previous prime is 1401144671. The next prime is 1401144697. The reversal of 1401144673 is 3764411041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 939238609 + 461906064 = 30647^2 + 21492^2 .

It is a cyclic number.

It is not a de Polignac number, because 1401144673 - 2¹ = 1401144671 is a prime.

Together with 1401144671, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1401144671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 700572336 + 700572337.

It is an arithmetic number, because the mean of its divisors is an integer number (700572337).

Almost surely, 2^1401144673 is an apocalyptic number.

It is an amenable number.

1401144673 is a deficient number, since it is larger than the sum of its proper divisors (1).

1401144673 is an equidigital number, since it uses as much as digits as its factorization.

1401144673 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 1401144673 is about 37431.8670787339. The cubic root of 1401144673 is about 1118.9937478404.

Subtracting 1401144673 from its reverse (3764411041), we obtain a cube (2363266368 = 1332³).

The spelling of 1401144673 in words is "one billion, four hundred one million, one hundred forty-four thousand, six hundred seventy-three".