1436934721 has 2 divisors, whose sum is σ = 1436934722. Its totient is φ = 1436934720.

The previous prime is 1436934613. The next prime is 1436934739. The reversal of 1436934721 is 1274396341.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 755150400 + 681784321 = 27480^2 + 26111^2 .

It is a cyclic number.

It is not a de Polignac number, because 1436934721 - 2⁹ = 1436934209 is a prime.

It is not a weakly prime, because it can be changed into another prime (1436934791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 718467360 + 718467361.

It is an arithmetic number, because the mean of its divisors is an integer number (718467361).

Almost surely, 2^1436934721 is an apocalyptic number.

It is an amenable number.

1436934721 is a deficient number, since it is larger than the sum of its proper divisors (1).

1436934721 is an equidigital number, since it uses as much as digits as its factorization.

1436934721 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108864, while the sum is 40.

The square root of 1436934721 is about 37906.9218085563. The cubic root of 1436934721 is about 1128.4414048959.

The spelling of 1436934721 in words is "one billion, four hundred thirty-six million, nine hundred thirty-four thousand, seven hundred twenty-one".