1154728697 has 2 divisors, whose sum is σ = 1154728698. Its totient is φ = 1154728696.

The previous prime is 1154728637. The next prime is 1154728709. The reversal of 1154728697 is 7968274511.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 709476496 + 445252201 = 26636^2 + 21101^2 .

It is a cyclic number.

It is not a de Polignac number, because 1154728697 - 2⁸ = 1154728441 is a prime.

It is not a weakly prime, because it can be changed into another prime (1154728637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 577364348 + 577364349.

It is an arithmetic number, because the mean of its divisors is an integer number (577364349).

Almost surely, 2^1154728697 is an apocalyptic number.

It is an amenable number.

1154728697 is a deficient number, since it is larger than the sum of its proper divisors (1).

1154728697 is an equidigital number, since it uses as much as digits as its factorization.

1154728697 is an evil number, because the sum of its binary digits is even.

The product of its digits is 846720, while the sum is 50.

The square root of 1154728697 is about 33981.2992247206. The cubic root of 1154728697 is about 1049.1235912873.

The spelling of 1154728697 in words is "one billion, one hundred fifty-four million, seven hundred twenty-eight thousand, six hundred ninety-seven".