1538532742 has 64 divisors (see below), whose sum is σ = 2582565120. Its totient is φ = 684343296.

The previous prime is 1538532731. The next prime is 1538532763. The reversal of 1538532742 is 2472358351.

It is a junction number, because it is equal to n+sod(n) for n = 1538532695 and 1538532704.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11230098 + ... + 11230234.

It is an arithmetic number, because the mean of its divisors is an integer number (40352580).

Almost surely, 2^1538532742 is an apocalyptic number.

1538532742 is a deficient number, since it is larger than the sum of its proper divisors (1044032378).

1538532742 is a wasteful number, since it uses less digits than its factorization.

1538532742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385.

The product of its digits is 201600, while the sum is 40.

The square root of 1538532742 is about 39224.1346877149. The cubic root of 1538532742 is about 1154.4334826604.

The spelling of 1538532742 in words is "one billion, five hundred thirty-eight million, five hundred thirty-two thousand, seven hundred forty-two".