1540260983 has 2 divisors, whose sum is σ = 1540260984. Its totient is φ = 1540260982.

The previous prime is 1540260937. The next prime is 1540261001. The reversal of 1540260983 is 3890620451.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1540260983 - 2¹⁴ = 1540244599 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1540263983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 770130491 + 770130492.

It is an arithmetic number, because the mean of its divisors is an integer number (770130492).

Almost surely, 2^1540260983 is an apocalyptic number.

1540260983 is a deficient number, since it is larger than the sum of its proper divisors (1).

1540260983 is an equidigital number, since it uses as much as digits as its factorization.

1540260983 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 1540260983 is about 39246.1588311519. The cubic root of 1540260983 is about 1154.8655810786.

The spelling of 1540260983 in words is "one billion, five hundred forty million, two hundred sixty thousand, nine hundred eighty-three".