1043540149 has 2 divisors, whose sum is σ = 1043540150. Its totient is φ = 1043540148.

The previous prime is 1043540131. The next prime is 1043540171. The reversal of 1043540149 is 9410453401.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 818989924 + 224550225 = 28618^2 + 14985^2 .

It is an emirp because it is prime and its reverse (9410453401) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1043540149 - 2¹¹ = 1043538101 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1043540149.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1043570149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 521770074 + 521770075.

It is an arithmetic number, because the mean of its divisors is an integer number (521770075).

Almost surely, 2^1043540149 is an apocalyptic number.

It is an amenable number.

1043540149 is a deficient number, since it is larger than the sum of its proper divisors (1).

1043540149 is an equidigital number, since it uses as much as digits as its factorization.

1043540149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 1043540149 is about 32303.8720434563. The cubic root of 1043540149 is about 1014.3076965102.

The spelling of 1043540149 in words is "one billion, forty-three million, five hundred forty thousand, one hundred forty-nine".