1401730849 has 2 divisors, whose sum is σ = 1401730850. Its totient is φ = 1401730848.

The previous prime is 1401730843. The next prime is 1401730853. The reversal of 1401730849 is 9480371041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1079779600 + 321951249 = 32860^2 + 17943^2 .

It is a cyclic number.

It is not a de Polignac number, because 1401730849 - 2⁵ = 1401730817 is a prime.

It is not a weakly prime, because it can be changed into another prime (1401730843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 700865424 + 700865425.

It is an arithmetic number, because the mean of its divisors is an integer number (700865425).

Almost surely, 2^1401730849 is an apocalyptic number.

It is an amenable number.

1401730849 is a deficient number, since it is larger than the sum of its proper divisors (1).

1401730849 is an equidigital number, since it uses as much as digits as its factorization.

1401730849 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 1401730849 is about 37439.6961659680. The cubic root of 1401730849 is about 1119.1497716598.

The spelling of 1401730849 in words is "one billion, four hundred one million, seven hundred thirty thousand, eight hundred forty-nine".