1157321603 has 2 divisors, whose sum is σ = 1157321604. Its totient is φ = 1157321602.

The previous prime is 1157321587. The next prime is 1157321617. The reversal of 1157321603 is 3061237511.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1157321603 - 2⁴ = 1157321587 is a prime.

It is not a weakly prime, because it can be changed into another prime (1157321623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 578660801 + 578660802.

It is an arithmetic number, because the mean of its divisors is an integer number (578660802).

Almost surely, 2^1157321603 is an apocalyptic number.

1157321603 is a deficient number, since it is larger than the sum of its proper divisors (1).

1157321603 is an equidigital number, since it uses as much as digits as its factorization.

1157321603 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3780, while the sum is 29.

The square root of 1157321603 is about 34019.4297865205. The cubic root of 1157321603 is about 1049.9082619776.

The spelling of 1157321603 in words is "one billion, one hundred fifty-seven million, three hundred twenty-one thousand, six hundred three".