1401844061 has 2 divisors, whose sum is σ = 1401844062. Its totient is φ = 1401844060.

The previous prime is 1401844033. The next prime is 1401844109. The reversal of 1401844061 is 1604481041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1319941561 + 81902500 = 36331^2 + 9050^2 .

It is a cyclic number.

It is not a de Polignac number, because 1401844061 - 2¹⁸ = 1401581917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1401844261) 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 as a sum of consecutive naturals, namely, 700922030 + 700922031.

It is an arithmetic number, because the mean of its divisors is an integer number (700922031).

Almost surely, 2^1401844061 is an apocalyptic number.

It is an amenable number.

1401844061 is a deficient number, since it is larger than the sum of its proper divisors (1).

1401844061 is an equidigital number, since it uses as much as digits as its factorization.

1401844061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3072, while the sum is 29.

The square root of 1401844061 is about 37441.2080601040. The cubic root of 1401844061 is about 1119.1799005473.

The spelling of 1401844061 in words is "one billion, four hundred one million, eight hundred forty-four thousand, sixty-one".