1540930889 has 2 divisors, whose sum is σ = 1540930890. Its totient is φ = 1540930888.

The previous prime is 1540930883. The next prime is 1540930901. The reversal of 1540930889 is 9880390451.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1404975289 + 135955600 = 37483^2 + 11660^2 .

It is a cyclic number.

It is not a de Polignac number, because 1540930889 - 2⁴ = 1540930873 is a prime.

It is not a weakly prime, because it can be changed into another prime (1540930883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 770465444 + 770465445.

It is an arithmetic number, because the mean of its divisors is an integer number (770465445).

Almost surely, 2^1540930889 is an apocalyptic number.

It is an amenable number.

1540930889 is a deficient number, since it is larger than the sum of its proper divisors (1).

1540930889 is an equidigital number, since it uses as much as digits as its factorization.

1540930889 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 311040, while the sum is 47.

The square root of 1540930889 is about 39254.6925729906. The cubic root of 1540930889 is about 1155.0329854463.

The spelling of 1540930889 in words is "one billion, five hundred forty million, nine hundred thirty thousand, eight hundred eighty-nine".