1538746655 has 8 divisors (see below), whose sum is σ = 1876766784. Its totient is φ = 1210816800.

The previous prime is 1538746631. The next prime is 1538746669. The reversal of 1538746655 is 5566478351.

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

It is not a de Polignac number, because 1538746655 - 2⁶ = 1538746591 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 7 ways as a sum of consecutive naturals, for example, 2522231 + ... + 2522840.

It is an arithmetic number, because the mean of its divisors is an integer number (234595848).

Almost surely, 2^1538746655 is an apocalyptic number.

1538746655 is a deficient number, since it is larger than the sum of its proper divisors (338020129).

1538746655 is an equidigital number, since it uses as much as digits as its factorization.

1538746655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5045137.

The product of its digits is 3024000, while the sum is 50.

The square root of 1538746655 is about 39226.8613962422. The cubic root of 1538746655 is about 1154.4869831761.

The spelling of 1538746655 in words is "one billion, five hundred thirty-eight million, seven hundred forty-six thousand, six hundred fifty-five".