1538345756 has 12 divisors (see below), whose sum is σ = 2707667592. Its totient is φ = 764726448.

The previous prime is 1538345729. The next prime is 1538345761. The reversal of 1538345756 is 6575438351.

It is a self number, because there is not a number n which added to its sum of digits gives 1538345756.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1110830 + ... + 1112213.

It is an arithmetic number, because the mean of its divisors is an integer number (225638966).

Almost surely, 2^1538345756 is an apocalyptic number.

It is an amenable number.

1538345756 is a deficient number, since it is larger than the sum of its proper divisors (1169321836).

1538345756 is a wasteful number, since it uses less digits than its factorization.

1538345756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2223220 (or 2223218 counting only the distinct ones).

The product of its digits is 1512000, while the sum is 47.

The square root of 1538345756 is about 39221.7510572896. The cubic root of 1538345756 is about 1154.3867126353.

The spelling of 1538345756 in words is "one billion, five hundred thirty-eight million, three hundred forty-five thousand, seven hundred fifty-six".