1540150999 has 2 divisors, whose sum is σ = 1540151000. Its totient is φ = 1540150998.

The previous prime is 1540150993. The next prime is 1540151027. The reversal of 1540150999 is 9990510451.

It is a weak prime.

It is an emirp because it is prime and its reverse (9990510451) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1540150999 - 2³ = 1540150991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1540150991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 770075499 + 770075500.

It is an arithmetic number, because the mean of its divisors is an integer number (770075500).

Almost surely, 2^1540150999 is an apocalyptic number.

1540150999 is a deficient number, since it is larger than the sum of its proper divisors (1).

1540150999 is an equidigital number, since it uses as much as digits as its factorization.

1540150999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72900, while the sum is 43.

The square root of 1540150999 is about 39244.7575989456. The cubic root of 1540150999 is about 1154.8380922827.

The spelling of 1540150999 in words is "one billion, five hundred forty million, one hundred fifty thousand, nine hundred ninety-nine".