1401744737 has 2 divisors, whose sum is σ = 1401744738. Its totient is φ = 1401744736.

The previous prime is 1401744733. The next prime is 1401744739. The reversal of 1401744737 is 7374471041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1231729216 + 170015521 = 35096^2 + 13039^2 .

It is a cyclic number.

It is not a de Polignac number, because 1401744737 - 2² = 1401744733 is a prime.

Together with 1401744739, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1401744737.

It is not a weakly prime, because it can be changed into another prime (1401744731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 700872368 + 700872369.

It is an arithmetic number, because the mean of its divisors is an integer number (700872369).

Almost surely, 2^1401744737 is an apocalyptic number.

It is an amenable number.

1401744737 is a deficient number, since it is larger than the sum of its proper divisors (1).

1401744737 is an equidigital number, since it uses as much as digits as its factorization.

1401744737 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 65856, while the sum is 38.

The square root of 1401744737 is about 37439.8816370992. The cubic root of 1401744737 is about 1119.1534677333.

The spelling of 1401744737 in words is "one billion, four hundred one million, seven hundred forty-four thousand, seven hundred thirty-seven".