1406611957 has 2 divisors, whose sum is σ = 1406611958. Its totient is φ = 1406611956.

The previous prime is 1406611931. The next prime is 1406611963. The reversal of 1406611957 is 7591166041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 806900836 + 599711121 = 28406^2 + 24489^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1406611957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1406611967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 703305978 + 703305979.

It is an arithmetic number, because the mean of its divisors is an integer number (703305979).

Almost surely, 2^1406611957 is an apocalyptic number.

It is an amenable number.

1406611957 is a deficient number, since it is larger than the sum of its proper divisors (1).

1406611957 is an equidigital number, since it uses as much as digits as its factorization.

1406611957 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45360, while the sum is 40.

The square root of 1406611957 is about 37504.8257828243. The cubic root of 1406611957 is about 1120.4473014048.

Adding to 1406611957 its reverse (7591166041), we get a palindrome (8997777998).

The spelling of 1406611957 in words is "one billion, four hundred six million, six hundred eleven thousand, nine hundred fifty-seven".