1542683993 has 2 divisors, whose sum is σ = 1542683994. Its totient is φ = 1542683992.

The previous prime is 1542683981. The next prime is 1542684007. The reversal of 1542683993 is 3993862451.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1232501449 + 310182544 = 35107^2 + 17612^2 .

It is a cyclic number.

It is not a de Polignac number, because 1542683993 - 2¹⁶ = 1542618457 is a prime.

It is not a weakly prime, because it can be changed into another prime (1542683293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 771341996 + 771341997.

It is an arithmetic number, because the mean of its divisors is an integer number (771341997).

Almost surely, 2^1542683993 is an apocalyptic number.

It is an amenable number.

1542683993 is a deficient number, since it is larger than the sum of its proper divisors (1).

1542683993 is an equidigital number, since it uses as much as digits as its factorization.

1542683993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1399680, while the sum is 50.

The square root of 1542683993 is about 39277.0160908387. The cubic root of 1542683993 is about 1155.4708431822.

The spelling of 1542683993 in words is "one billion, five hundred forty-two million, six hundred eighty-three thousand, nine hundred ninety-three".