1538986 has 16 divisors (see below), whose sum is σ = 2386944. Its totient is φ = 743904.

The previous prime is 1538983. The next prime is 1538989. The reversal of 1538986 is 6898351.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1538983) and next prime (1538989).

It is not an unprimeable number, because it can be changed into a prime (1538983) 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, 12055 + ... + 12181.

It is an arithmetic number, because the mean of its divisors is an integer number (149184).

2^1538986 is an apocalyptic number.

1538986 is a deficient number, since it is larger than the sum of its proper divisors (847958).

1538986 is a wasteful number, since it uses less digits than its factorization.

1538986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285.

The product of its digits is 51840, while the sum is 40.

The square root of 1538986 is about 1240.5587450822. The cubic root of 1538986 is about 115.4546838462.

The spelling of 1538986 in words is "one million, five hundred thirty-eight thousand, nine hundred eighty-six".