1540057019 has 2 divisors, whose sum is σ = 1540057020. Its totient is φ = 1540057018.

The previous prime is 1540057009. The next prime is 1540057061. The reversal of 1540057019 is 9107500451.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1540057019 - 2²⁸ = 1271621563 is a prime.

It is a super-2 number, since 2×1540057019² = 4743551243542332722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1540057009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 770028509 + 770028510.

It is an arithmetic number, because the mean of its divisors is an integer number (770028510).

Almost surely, 2^1540057019 is an apocalyptic number.

1540057019 is a deficient number, since it is larger than the sum of its proper divisors (1).

1540057019 is an equidigital number, since it uses as much as digits as its factorization.

1540057019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6300, while the sum is 32.

The square root of 1540057019 is about 39243.5602233029. The cubic root of 1540057019 is about 1154.8146024016.

The spelling of 1540057019 in words is "one billion, five hundred forty million, fifty-seven thousand, nineteen".