1143490157 has 2 divisors, whose sum is σ = 1143490158. Its totient is φ = 1143490156.

The previous prime is 1143490147. The next prime is 1143490163. The reversal of 1143490157 is 7510943411.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1004509636 + 138980521 = 31694^2 + 11789^2 .

It is a cyclic number.

It is not a de Polignac number, because 1143490157 - 2⁴ = 1143490141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1143490147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 571745078 + 571745079.

It is an arithmetic number, because the mean of its divisors is an integer number (571745079).

Almost surely, 2^1143490157 is an apocalyptic number.

It is an amenable number.

1143490157 is a deficient number, since it is larger than the sum of its proper divisors (1).

1143490157 is an equidigital number, since it uses as much as digits as its factorization.

1143490157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 1143490157 is about 33815.5312985025. The cubic root of 1143490157 is about 1045.7089142099.

The spelling of 1143490157 in words is "one billion, one hundred forty-three million, four hundred ninety thousand, one hundred fifty-seven".