1154437157 has 2 divisors, whose sum is σ = 1154437158. Its totient is φ = 1154437156.

The previous prime is 1154437153. The next prime is 1154437177. The reversal of 1154437157 is 7517344511.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1042902436 + 111534721 = 32294^2 + 10561^2 .

It is an emirp because it is prime and its reverse (7517344511) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1154437157 - 2² = 1154437153 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1154437157.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1154437153) 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, 577218578 + 577218579.

It is an arithmetic number, because the mean of its divisors is an integer number (577218579).

Almost surely, 2^1154437157 is an apocalyptic number.

It is an amenable number.

1154437157 is a deficient number, since it is larger than the sum of its proper divisors (1).

1154437157 is an equidigital number, since it uses as much as digits as its factorization.

1154437157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 58800, while the sum is 38.

The square root of 1154437157 is about 33977.0092415445. The cubic root of 1154437157 is about 1049.0352914015.

The spelling of 1154437157 in words is "one billion, one hundred fifty-four million, four hundred thirty-seven thousand, one hundred fifty-seven".