1540887307 has 2 divisors, whose sum is σ = 1540887308. Its totient is φ = 1540887306.

The previous prime is 1540887233. The next prime is 1540887371. The reversal of 1540887307 is 7037880451.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1540887307 is a prime.

It is not a weakly prime, because it can be changed into another prime (1540887377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 770443653 + 770443654.

It is an arithmetic number, because the mean of its divisors is an integer number (770443654).

Almost surely, 2^1540887307 is an apocalyptic number.

1540887307 is a deficient number, since it is larger than the sum of its proper divisors (1).

1540887307 is an equidigital number, since it uses as much as digits as its factorization.

1540887307 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 188160, while the sum is 43.

The square root of 1540887307 is about 39254.1374507198. The cubic root of 1540887307 is about 1155.0220961147.

The spelling of 1540887307 in words is "one billion, five hundred forty million, eight hundred eighty-seven thousand, three hundred seven".