1542836681 has 8 divisors (see below), whose sum is σ = 1553731200. Its totient is φ = 1531962208.

The previous prime is 1542836657. The next prime is 1542836699. The reversal of 1542836681 is 1866382451.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1542836681 - 2²² = 1538642377 is a prime.

It is a super-2 number, since 2×1542836681² = 4760690048478191522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1542835681) 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 in 7 ways as a sum of consecutive naturals, for example, 170780 + ... + 179586.

It is an arithmetic number, because the mean of its divisors is an integer number (194216400).

Almost surely, 2^1542836681 is an apocalyptic number.

It is an amenable number.

1542836681 is a deficient number, since it is larger than the sum of its proper divisors (10894519).

1542836681 is a wasteful number, since it uses less digits than its factorization.

1542836681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10023.

The product of its digits is 276480, while the sum is 44.

The square root of 1542836681 is about 39278.9597749228. The cubic root of 1542836681 is about 1155.5089630461.

The spelling of 1542836681 in words is "one billion, five hundred forty-two million, eight hundred thirty-six thousand, six hundred eighty-one".