1540359907 has 2 divisors, whose sum is σ = 1540359908. Its totient is φ = 1540359906.

The previous prime is 1540359881. The next prime is 1540359917. The reversal of 1540359907 is 7099530451.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1540359907 is a prime.

It is not a weakly prime, because it can be changed into another prime (1540359917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 770179953 + 770179954.

It is an arithmetic number, because the mean of its divisors is an integer number (770179954).

Almost surely, 2^1540359907 is an apocalyptic number.

1540359907 is a deficient number, since it is larger than the sum of its proper divisors (1).

1540359907 is an equidigital number, since it uses as much as digits as its factorization.

1540359907 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 170100, while the sum is 43.

The square root of 1540359907 is about 39247.4191125990. The cubic root of 1540359907 is about 1154.8903044812.

The spelling of 1540359907 in words is "one billion, five hundred forty million, three hundred fifty-nine thousand, nine hundred seven".