1542653813 has 2 divisors, whose sum is σ = 1542653814. Its totient is φ = 1542653812.

The previous prime is 1542653807. The next prime is 1542653843. The reversal of 1542653813 is 3183562451.

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., 942305809 + 600348004 = 30697^2 + 24502^2 .

It is an emirp because it is prime and its reverse (3183562451) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1542653813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1542653843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 771326906 + 771326907.

It is an arithmetic number, because the mean of its divisors is an integer number (771326907).

Almost surely, 2^1542653813 is an apocalyptic number.

It is an amenable number.

1542653813 is a deficient number, since it is larger than the sum of its proper divisors (1).

1542653813 is an equidigital number, since it uses as much as digits as its factorization.

1542653813 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 86400, while the sum is 38.

The square root of 1542653813 is about 39276.6318948048. The cubic root of 1542653813 is about 1155.4633081896.

The spelling of 1542653813 in words is "one billion, five hundred forty-two million, six hundred fifty-three thousand, eight hundred thirteen".