1151634997 has 2 divisors, whose sum is σ = 1151634998.
Its totient is φ = 1151634996.
The previous prime is 1151634989. The next prime is 1151635003. The reversal of 1151634997 is 7994361511.
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 1080502641 + 71132356 = 32871^2 + 8434^2
It is a cyclic number.
It is not a de Polignac number, because 1151634997 - 23 = 1151634989 is a prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (1151634907) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 575817498 + 575817499.
It is an arithmetic number, because the mean of its divisors is an integer number (575817499).
Almost surely, 21151634997 is an apocalyptic number.
It is an amenable number.
1151634997 is a deficient number, since it is larger than the sum of its proper divisors (1).
1151634997 is an equidigital number, since it uses as much as digits as its factorization.
1151634997 is an odious number, because the sum of its binary digits is odd.
The product of its digits is 204120, while the sum is 46.
The square root of 1151634997 is about 33935.7480689611.
The cubic root of 1151634997 is about 1048.1858308876.
The spelling of 1151634997 in words is "one billion, one hundred fifty-one million, six hundred thirty-four thousand, nine hundred ninety-seven".