1405500073 has 2 divisors, whose sum is σ = 1405500074. Its totient is φ = 1405500072.

The previous prime is 1405500023. The next prime is 1405500113. The reversal of 1405500073 is 3700055041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1019652624 + 385847449 = 31932^2 + 19643^2 .

It is a cyclic number.

It is not a de Polignac number, because 1405500073 - 2⁹ = 1405499561 is a prime.

It is not a weakly prime, because it can be changed into another prime (1405500023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 702750036 + 702750037.

It is an arithmetic number, because the mean of its divisors is an integer number (702750037).

Almost surely, 2^1405500073 is an apocalyptic number.

It is an amenable number.

1405500073 is a deficient number, since it is larger than the sum of its proper divisors (1).

1405500073 is an equidigital number, since it uses as much as digits as its factorization.

1405500073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2100, while the sum is 25.

The square root of 1405500073 is about 37489.9996399040. Note that the first 3 decimals coincide. The cubic root of 1405500073 is about 1120.1519970690.

The spelling of 1405500073 in words is "one billion, four hundred five million, five hundred thousand, seventy-three".