1401605207 has 2 divisors, whose sum is σ = 1401605208. Its totient is φ = 1401605206.

The previous prime is 1401605203. The next prime is 1401605321. The reversal of 1401605207 is 7025061041.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1401605207 - 2² = 1401605203 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1401605203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 700802603 + 700802604.

It is an arithmetic number, because the mean of its divisors is an integer number (700802604).

Almost surely, 2^1401605207 is an apocalyptic number.

1401605207 is a deficient number, since it is larger than the sum of its proper divisors (1).

1401605207 is an equidigital number, since it uses as much as digits as its factorization.

1401605207 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 1401605207 is about 37438.0182034252. The cubic root of 1401605207 is about 1119.1163329015.

Adding to 1401605207 its reverse (7025061041), we get a palindrome (8426666248).

The spelling of 1401605207 in words is "one billion, four hundred one million, six hundred five thousand, two hundred seven".