1538746386 has 16 divisors (see below), whose sum is σ = 3079236384. Its totient is φ = 512624864.

The previous prime is 1538746337. The next prime is 1538746387. The reversal of 1538746386 is 6836478351.

It is not an unprimeable number, because it can be changed into a prime (1538746387) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61035 + ... + 82478.

It is an arithmetic number, because the mean of its divisors is an integer number (192452274).

Almost surely, 2^1538746386 is an apocalyptic number.

1538746386 is an abundant number, since it is smaller than the sum of its proper divisors (1540489998).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1538746386 is a wasteful number, since it uses less digits than its factorization.

1538746386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145305.

The product of its digits is 2903040, while the sum is 51.

The square root of 1538746386 is about 39226.8579674692. The cubic root of 1538746386 is about 1154.4869159012.

The spelling of 1538746386 in words is "one billion, five hundred thirty-eight million, seven hundred forty-six thousand, three hundred eighty-six".