1542651655 has 24 divisors (see below), whose sum is σ = 2003683392. Its totient is φ = 1139553792.

The previous prime is 1542651637. The next prime is 1542651661. The reversal of 1542651655 is 5561562451.

It is not a de Polignac number, because 1542651655 - 2⁵ = 1542651623 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 66514 + ... + 86656.

It is an arithmetic number, because the mean of its divisors is an integer number (83486808).

Almost surely, 2^1542651655 is an apocalyptic number.

1542651655 is a deficient number, since it is larger than the sum of its proper divisors (461031737).

1542651655 is a wasteful number, since it uses less digits than its factorization.

1542651655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20235 (or 20218 counting only the distinct ones).

The product of its digits is 180000, while the sum is 40.

The square root of 1542651655 is about 39276.6044229895. The cubic root of 1542651655 is about 1155.4627694014.

It can be divided in two parts, 15426 and 51655, that added together give a square (67081 = 259²).

The spelling of 1542651655 in words is "one billion, five hundred forty-two million, six hundred fifty-one thousand, six hundred fifty-five".