1540932949 has 2 divisors, whose sum is σ = 1540932950. Its totient is φ = 1540932948.

The previous prime is 1540932937. The next prime is 1540932959. The reversal of 1540932949 is 9492390451.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 858783025 + 682149924 = 29305^2 + 26118^2 .

It is an emirp because it is prime and its reverse (9492390451) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1540932949 - 2¹¹ = 1540930901 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1540932899 and 1540932908.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1540932959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 770466474 + 770466475.

It is an arithmetic number, because the mean of its divisors is an integer number (770466475).

Almost surely, 2^1540932949 is an apocalyptic number.

It is an amenable number.

1540932949 is a deficient number, since it is larger than the sum of its proper divisors (1).

1540932949 is an equidigital number, since it uses as much as digits as its factorization.

1540932949 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 349920, while the sum is 46.

The square root of 1540932949 is about 39254.7188118830. The cubic root of 1540932949 is about 1155.0335001496.

The spelling of 1540932949 in words is "one billion, five hundred forty million, nine hundred thirty-two thousand, nine hundred forty-nine".